Classification of Hay 1930
G. †Hydrodamalis Retzius 1794 [Steller's sea cow]
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†Hydrodamalis gigas Zimmermann 1780 [Steller's sea cow]
Tr. Otariidae Gray 1825 [eared seal]
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G. Eumetopias Gill 1866 [Steller sea lion]
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Eumetopias jubata Schreber 1776 [Steller sea lion]
Eumetopias stelleri Fischer 1829
G. Zalophus Gill 1866 [California sea lion]
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Zalophus californiana Lesson 1828 [California sea lion]
G. †Perchoerus Leidy 1869
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†Perchoerus osmonti Sinclair 1905
Invalid names: Bothrolabis Cope 1888 [synonym]
G. †Merycochoerus Leidy 1858
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Invalid names: Merycochoerus (Brachycrus) Matthew 1901 [invalid subgroup]
Fm. Ziphiidae Gray 1850 [beaked whale]
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G. †Sastrilophus Sahni and Khare 1971
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Invalid names: Sastrilophus dehmi Sahni and Khare 1971 [nomen dubium]
Fm. †Desmostylidae Osborn 1905
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Sorex parvus Say 1823 [North American least shrew]
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Invalid names: Sorex cinereus Kerr 1792 [synonym]
Fm. Pinnipedia Illiger 1811 [pinniped]
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Fm. †Desmatophocidae Hay 1930
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Fm. Odobenidae Allen 1880 [walrus]
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G. Odobenus Brisson 1762 [walrus]
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Odobenus divergens Illiger 1815
Odobenus rosmarus Linnaeus 1758 [walrus]
†Odobenus virginianus De Kay 1842
Fm. Phocidae Gray 1821 [seal]
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Subfm. †Lobodontinae Gray 1869
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G. Lobodon Gray 1844 [crabeater seal]
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Lobodon carcinophaga Hombron and Jacquinot 1843 [crabeater seal]
†Lobodon vetus Leidy 1853
Subfm. Phocinae Gray 1821 [seal]
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G. Phoca Linnaeus 1758 [seal]
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Phoca groenlandica Erxleben 1777 [harp seal]
Phoca hispida Schreber 1775 [ringed seal]
†Phoca modesta Leidy 1869
Phoca vitulina Linnaeus 1758 [harbor seal]
†Phoca wymani Leidy 1854
Invalid names: Cystophorinae Gray 1866 [empty]
G. †Collettosaurus Cox 1874
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†Collettosaurus indianaensis Cox 1874
†Collettosaurus magnus Butts 1891
†Collettosaurus missouriensis Butts 1891
†Collettosaurus pentadactylus Gilmore 1927
Invalid names: Notalacerta Butts 1891 [synonym], Notamphibia Butts 1891 [synonym]
G. †Grallator Hitchcock 1858
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†Grallator cuneatus Hitchcock 1858
†Grallator cursorius Hitchcock 1858
†Grallator formosus Hitchcock 1858
†Grallator gracilis Hitchcock 1837
†Grallator tenuis Hitchcock 1858
G. †Anchisauripus Lull 1904
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†Anchisauripus dananus Hitchcock 1845
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Invalid names: Anchisauripus sillimani Hitchcock 1843 [synonym]
†Anchisauripus exsertus Hitchcock 1858
†Anchisauripus hitchcocki Lull 1904
†Anchisauripus minusculus Hitchcock 1837
†Anchisauripus parallelus Hitchcock 1837
†Anchisauripus tuberatus Hitchcock 1858
†Anchisauripus tuberosus Hitchcock 1836
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Invalid names: Brontozoum validum Hitchcock 1858 [synonym]
G. †Chirotherium Kaup 1835
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†Chirotherium barthii Kaup 1835
†Chirotherium heterodactylum King 1844
†Chirotherium parvum Hitchcock 1889
†Chirotherium reiteri Moore 1873
Invalid names: Thenaropus King 1845 [synonym]
G. †Otozoum Hitchcock 1847
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†Otozoum caudatum Hitchcock 1871
†Otozoum minus Lull 1915
†Otozoum moodii Hitchcock 1847
G. †Eubrontes Hitchcock 1845
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†Eubrontes approximatus Hitchcock 1865
†Eubrontes divaricatus Hitchcock 1865
†Eubrontes expansus Hitchcock 1841
†Eubrontes giganteus Hitchcock 1836
†Eubrontes titanopelopatidus Shuler 1917
Invalid names: Brontozoum Hitchcock 1847 [synonym]
G. †Triaenopus Hitchcock 1845
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†Triaenopus baileyanus Hitchcock 1841
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Invalid names: Triaenopus leptodactylus Hitchcock 1858 [synonym]
G. †Otouphepus Cushman 1904
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†Otouphepus magnificus Cushman 1904
†Otouphepus minor Lull 1915
G. †Stenonyx Lull 1904
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†Stenonyx lateralis Hitchcock 1865
Invalid names: Leptonyx Hitchcock 1865 [replaced]
G. †Selenichnus Hitchcock 1858
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†Selenichnus breviusculus Hitchcock 1858
†Selenichnus falcatus Hitchcock 1858
G. †Anomoepus Hitchcock 1848
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†Anomoepus crassus Hitchcock 1889
†Anomoepus culbertsonii King 1844
†Anomoepus cuneatus Hitchcock 1889
†Anomoepus curvatus Hitchcock 1862
†Anomoepus gallinuloides King 1844
†Anomoepus giganteus Hitchcock and Grier 1927
†Anomoepus gracillimus Hitchcock 1844
†Anomoepus intermedius Hitchcock 1862
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Invalid names: Plesiornis minor Hitchcock 1845 [synonym], Plesiornis quadrupes Hitchcock 1858 [synonym]
†Anomoepus isodactylus Hitchcock 1889
†Anomoepus major Hitchcock 1858
†Anomoepus minimus Hitchcock 1862
†Anomoepus scambus Hitchcock 1848
G. †Sauropus Hitchcock 1845
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†Sauropus barratii Hitchcock 1837
†Sauropus ingens Hitchcock 1889
G. †Apatichnus Hitchcock 1858
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†Apatichnus circumagens Hitchcock 1858
†Apatichnus holyokensis Hitchcock 1889
†Apatichnus minor Hitchcock 1858
Subph. Vertebrata Lamarck 1801 [vertebrate]
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Cl. Aves Linnaeus 1758 [bird]
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Superor. Eurhipidurae Gill 1874
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Or. †Carinatae Merrem 1813
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Subor. Charadriiformes Huxley 1867 [shorebird]
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Superfm. Alcoidae Stejneger 1885
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Fm. Alcidae Leach 1820 [auk]
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Subfm. Alcinae Leach 1820
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G. Cerorhinca Bonaparte 1828
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†Cerorhinca dubia Miller 1925
Cerorhinca monocerata Pallas 1811 [rhinoceros auklet]
Subfm. †Nautilornithinae
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Superfm. Charadrioidae
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Fm. †Presbyornithidae Wetmore 1926
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Fm. Recurvirostridae Bonaparte 1854
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G. Recurvirostra Linnaeus 1758 [avocet]
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Recurvirostra americana Gmelin 1789 [American avocet]
Recurvirostra avocetta Linnaeus 1758 [pied avocet]
Invalid names: Oedicnemidae Gray 1840 [empty], Phalaropodidae Bonaparte 1831 [empty]
Superfm. Laroidae Stejneger 1885
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Fm. Laridae Vigors 1825 [gull]
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Subfm. Larinae Bonaparte 1831
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G. Larus Linnaeus 1758
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Larus argentatus Pontoppidan 1763 [herring gull]
Larus californicus Lawrence 1854 [California gull]
Larus canus Linnaeus 1758 [mew gull]
†Larus oregonus Shufeldt 1891
†Larus pristinus Shufeldt 1915
†Larus robustus Shufeldt 1891
†Larus vero Shufeldt 1917
Subfm. Sterninae Bonaparte 1838 [tern]
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G. Sterna Linnaeus 1758 [tern]
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Sterna forsteri Nuttall 1834 [Foster's tern]
Sterna hirundo Linnaeus 1758 [common tern]
Fm. Scolopacidae Rafinesque 1815 [snipe]
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Subfm. Tringinae Gray 1840
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G. Limosa Brisson 1760 [godwit]
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Limosa limosa Linnaeus 1758 [black-tailed godwit]
†Limosa vanrossemi Miller 1925
G. Micropalama Baird 1858 [stilt sandpiper]
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†Micropalama hesterna Wetmore 1924
Micropalama himantopus Bonaparte 1826 [stilt sandpiper]
G. †Palaeotringa Marsh 1870
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†Palaeotringa littoralis Marsh 1870
†Palaeotringa vagans Marsh 1872
†Palaeotringa vetus Marsh 1870
G. Totanus Bechstein 1803
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Totanus melanoleucus Gmelin 1789 [greater yellowlegs]
Totanus totanus Bechstein 1803
Subor. Ciconiiformes Bonaparte 1854
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Superfm. Ibididoidae Hay 1930
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Fm. †Ibididae
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G. Plegadis Kaup 1829
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Plegadis autumnalis Hasselqvist 1762
Plegadis guarauna Linnaeus 1762 [limpkin]
Invalid names: Ardeoidae Stejneger 1885 [empty], Ciconioidae [empty], Phoenicopteroidae Stejneger 1885 [empty], Plataleoidae Hay 1930 [empty]
Subor. †Colymbiformes
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Fm. Colymbidae Shaw 1824
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G. Aechmophorus Coues 1862
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†Aechmophorus lucasi Miller 1911
Aechmophorus occidentalis Lawrence 1858 [western grebe]
G. Colymbus Linnaeus 1758
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Colymbus auritus Linnaeus 1758 [horned grebe]
Colymbus cristatus Linnaeus 1758 [great crested grebe]
Colymbus holboelii Reinhardt 1854 [red-necked grebe]
Colymbus nigricollis Brehm 1831 [black-necked grebe]
†Colymbus oligoceanus Shufeldt 1915
†Colymbus parvus Schufeldt 1913
G. Podilymbus Lesson 1831
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†Podilymbus magnus Schufeldt 1913
Podilymbus podiceps Linnaeus 1758 [pied-billed grebe]
Subor. Falconiformes Sharpe 1874 [raptor]
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Superfm. Falconoidae
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Fm. Aegypiidae [Old World vulture]
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Fm. Buteonidae Vigors 1824
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Subfm. Accipitrinae
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G. Accipiter Brisson 1760
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Accipiter cooperi Bonaparte 1828 [Cooper's hawk]
Accipiter velox Wilson 1812
Subfm. Buteoninae Vigors 1824 [hawk]
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G. Aquila Linnaeus 1758 [eagle]
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†Aquila antiqua Shufeldt 1913
Aquila chrysaetos Linnaeus 1758 [golden eagle]
†Aquila ferox Shufeldt 1913
†Aquila lydekkeri Shufeldt 1913
†Aquila pliogryps Shufeldt 1891
†Aquila sodalis Shufeldt 1891
G. Archibuteo Brehm 1828
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Archibuteo ferrugineus Lichtenstein 1836 [ferruginous hawk]
Archibuteo lagopus Pontoppidan 1763 [rough-legged hawk]
G. Buteo de Lacepède 1799 [hawk]
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Buteo borealis Gmelin 1788 [red-tailed hawk]
Buteo swainsoni Bonaparte 1838 [Swainson's hawk]
†Buteo typhoius Wetmore 1923
G. Geranoaetus Kaup 1844 [buzzard-eagle]
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†Geranoaetus ales Wetmore 1926
†Geranoaetus conterminus Wetmore 1923
†Geranoaetus contortus Wetmore 1924
†Geranoaetus danana Marsh 1871
†Geranoaetus fragilis Miller 1911
†Geranoaetus grinnelli Miller 1911
Geranoaetus melanoleucus Vieillot 1819 [black-chested buzzard eagle]
G. Urubitinga Lesson 1839 [black hawk]
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†Urubitinga enecta Wetmore 1923
Urubitinga urubitinga Gmelin 1788 [great black-hawk]
Invalid names: Aquilinae Vigors 1824 [synonym]
Subfm. Milvinae
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Invalid names: Circinae Bonaparte 1838 [empty], Elaninae Blyth 1851 [empty]
Fm. Falconidae Vigors 1824
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Subfm. Falconinae Vigors 1824
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G. Falco Linnaeus 1758 [falcon]
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Falco columbarius Linnaeus 1758 [merlin]
†Falco falconellus Shufeldt 1915
Falco fuscocaerulescens Vieillot 1817
Falco mexicanus Schlegel 1850 [Prairie falcon]
Falco peregrinus Tunstall 1771 [Peregrine falcon]
Falco sparverius Linnaeus 1758 [American kestrel]
Falco subbuteo Linnaeus 1758 [Eurasian hobby]
Subfm. Pandioninae Sclater and Salvin 1873 [osprey]
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Invalid names: Polyborinae Lafresnaye 1839 [empty]
Superfm. Vulturoidae Hay 1930
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Fm. †Teratornithidae Miller 1909 [teratorn]
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G. †Teratornis Miller 1909 [teratorn]
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†Teratornis merriami Miller 1909 [Merriam's teratorn]
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Invalid names: Pleistogyps rex Miller 1910 [synonym]
Invalid names: Pleistogyps Miller 1910 [synonym]
Fm. Vulturidae Illiger 1811 [vulture]
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G. Coragyps Geoffroy Saint-Hilaire 1853
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†Coragyps occidentalis Miller 1909
†Coragyps shastensis Miller 1911 [vulture]
Coragyps urubu Vieillot 1807
Invalid names: Catharista Vieillot 1816 [synonym]
G. Gymnogyps Lesson 1842
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†Gymnogyps amplus Miller 1911 [condor]
Gymnogyps californianus Shaw 1797 [California condor]
Invalid names: Pseudogryphus Ridgway 1874 [synonym]
Invalid names: Cathartidae Lafresnaye 1839 [synonym]
Subor. Galliformes Temminck 1820 [fowl]
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Superfm. Galloidae Hay 1930
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Fm. Cracidae Vigors 1825
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Subfm. Penelopinae Huxley 1868
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G. Ortalis Merrem 1786 [chachalaca]
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Ortalis motmot Linnaeus 1766 [Little chachalaca]
†Ortalis phengites Wetmore 1923
Fm. †Gallinuloididae Lucas 1900
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Fm. Meleagridae Gray 1840 [turkey]
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G. Meleagris Linnaeus 1758 [turkey]
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†Meleagris celer Marsh 1872
Meleagris gallopavo Linnaeus 1758 [wild turkey]
†Meleagris richmondi Shufeldt 1915
†Meleagris superba Cope 1870
Fm. Phasianidae Horsfield 1821 [pheasant]
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Subfm. Phasianinae Horsfield 1821
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G. Phasianus Linnaeus 1758
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†Phasianus alfhildae Shufeldt 1915
†Phasianus americanus Shufeldt 1915
Phasianus colchicus Linnaeus 1758 [ring-necked pheasant]
†Phasianus mioceanus Shufeldt 1915
Fm. Tetraonidae Linnaeus 1758 [grouse]
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G. Pedioecetes Baird 1858
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†Pedioecetes lucasi Shufeldt 1892
†Pedioecetes nanus Shufeldt 1891
Pedioecetes phasianellus Linnaeus 1758 [sharp-tailed grouse]
G. Tympanuchus Gloger 1841
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Tympanuchus cupido Linnaeus 1758 [greater prairie chicken]
†Tympanuchus lulli Shufeldt 1915
Tympanuchus pallidicinctus Ridgway 1873 [lesser prairie chicken]
Subor. Gruiformes Bonaparte 1854
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Fm. Aramidae Bonaparte 1854 [limpkin]
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Superfm. Gruoidae Stejneger 1885
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Fm. Gruidae Vigors 1825 [crane]
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Subfm. Gruinae
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G. †Aletornis Marsh 1872
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†Aletornis bellus Marsh 1872
†Aletornis gracilis Marsh 1872
†Aletornis nobilis Marsh 1872
†Aletornis pernix Marsh 1872
†Aletornis venustus Marsh 1872
G. Grus Brisson 1760 [crane]
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Grus americanus Linnaeus 1758 [Whooping crane]
Grus canadensis Linnaeus 1758 [Sandhill crane]
Grus grus Linnaeus 1758 [Common crane]
†Grus marshi Shufeldt 1915
†Grus prentici Loomis 1906
†Grus proavus Marsh 1872
Subor. †Ichthyornithiformes Marsh 1873
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Fm. †Ichthyornithidae Marsh 1873
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G. †Ichthyornis Marsh 1872
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†Ichthyornis agilis Marsh 1873
†Ichthyornis anceps Marsh 1872
†Ichthyornis dispar Marsh 1872
†Ichthyornis tener Marsh 1880
†Ichthyornis validus Marsh 1880
†Ichthyornis victor Marsh 1876
Subor. Passeriformes Linnaeus 1758 [perching bird]
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Superfm. Formicaroidae Hay 1930
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Invalid names: Fringilloidae Hay 1930 [empty]
Subor. Pelecaniformes Sharpe 1891
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Superfm. Pelecanoidae Rafinesque 1815
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Fm. †Cyphornithidae Wemore 1928
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Fm. Pelecanidae Vigors 1825 [pelican]
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G. Pelecanus Linnaeus 1758 [pelican]
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Pelecanus erythrorhynchos Gmelin 1789 [American white pelican]
Pelecanus onocrotalus Linnaaeus 1758
Superfm. Suloidae Hay 1930
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Fm. Phalacrocoracidae Reichenbach 1850 [cormorant]
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G. Phalacrocorax Brisson 1760 [cormorant]
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Phalacrocorax carbo Linnaeus 1758 [great cormorant]
†Phalacrocorax idahensis Marsh 1870
†Phalacrocorax macropus Cope 1878
†Phalacrocorax marinavis Shufeldt 1915
†Phalacrocorax mediterraneus Shufeldt 1915
Phalacrocorax penicillatus Brandt 1837 [Brandt's cormorant]
†Phalacrocorax perspicillatus Pallas 1811 [Spectacled cormorant]
Fm. Sulidae Reichenbach 1849 [booby]
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Subor. Psittaciformes Wagler 1830 [parrot]
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Fm. Psittacidae Illiger 1811 [parrot]
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G. †Conuropsis Salvadori 1891 [Carolina parakeet]
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Conuropsis carolinensis Linnaeus 1758 [Carolina parakeet]
†Conuropsis fratercula Wetmore 1926
Subor. Ralliformes
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Superfm. Ralloidae Rafinesque 1815
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Fm. Rallidae Vigors 1825 [rail]
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Subfm. †Fulicinae Nitzsch 1820
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G. Fulica Linnaeus 1758
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Fulica americana Gmelin 1789 [American coot]
Fulica atra Linnaeus 1758 [common coot]
†Fulica minor Shufeldt 1891
Subfm. Rallinae Vigors 1825
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G. Rallus Linnaeus 1758
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Rallus aquaticus Linnaeus 1758 [water rail]
Rallus virginianus Linnaeus 1766
G. †Telmatornis Marsh 1870
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†Telmatornis affinis Marsh 1870
†Telmatornis priscus Marsh 1870
†Telmatornis rex Shufeldt 1915
Subor. Strigiformes Wagler 1830 [owl]
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Fm. Strigidae Vigors 1825 [true owl]
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G. Bubo Dumeril 1806 [eagle-owl]
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Bubo bubo Linnaeus 1758 [Eurasian eagle-owl]
†Bubo leptosteus Marsh 1871
†Bubo sinclairi Miller 1911 [owl]
Bubo virginianus Gmelin 1788 [great horned owl]
G. Glaucidium Boie 1826 [pygmy-owl]
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Glaucidium gnoma Wagler 1832 [northern pygmy-owl]
Glaucidium passerinum Linnaeus 1758 [Eurasian pygmy-owl]
Invalid names: Bubonidae Sclater and Salvin 1873 [synonym]
Fm. Tytonidae Ridgway 1914 [barn owl]
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Invalid names: Anatiformes Hay 1930 [empty], Diatrymatiformes Hay 1930 [empty]
Or. †Hesperornithomorphi Hay 1930
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Fm. †Hesperornithidae Marsh 1872
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G. †Hesperornis Marsh 1872
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†Hesperornis crassipes Marsh 1876
†Hesperornis montanus Shufeldt 1915
†Hesperornis regalis Marsh 1872
Invalid names: Odontolcae Marsh 1875 [synonym]
Or. Ratitae Merrem 1813
Invalid names: Ornithurae Haeckel 1866 [synonym]
Superor. †Saururae Haeckel 1866
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Or. †Archaeopterygomorphi Hay 1930
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Invalid names: Ornithopappi Stejneger 1885 [synonym]
Invalid names: Archaeornithes Gadow 1893 [synonym]
Cl. Mammalia Linnaeus 1758 [mammal]
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Subcl. †Allotheria Marsh 1880
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Or. †Multituberculata Cope 1884 [multituberculate]
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Superfm. †Plagiaulacoidae Ameghino 1889
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Fm. †Plagiaulacidae Gill 1872
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G. †Ctenacodon Marsh 1879
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†Ctenacodon laticeps Marsh 1881
Invalid names: Allodon Marsh 1881 [synonym]
Invalid names: Bolodontidae Osborn 1887 [synonym]
Fm. †Ptilodontidae Cope 1887
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G. †Allacodon Marsh 1889
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†Allacodon fortis Marsh 1892
†Allacodon lentus Marsh 1889
†Allacodon pumilis Marsh 1889
†Allacodon rarus Marsh 1892
G. †Cimolomys Marsh 1889
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†Cimolomys bellus Marsh 1889
†Cimolomys digona Marsh 1889
†Cimolomys gracilis Marsh 1889
†Cimolomys minutus Marsh 1889
†Cimolomys parvus Marsh 1892
Invalid names: Nanomys Marsh 1889 [synonym]
G. †Eucosmodon Matthew and Granger 1921
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†Eucosmodon americanus Cope 1885
†Eucosmodon molestus Cope 1886
†Eucosmodon ultimus Granger and Simpson 1928
G. †Meniscoessus Cope 1882
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†Meniscoessus borealis Simpson 1927
†Meniscoessus brevis Marsh 1889
†Meniscoessus caperatus Marsh 1889
†Meniscoessus coelatus Marsh 1889
†Meniscoessus conquistus Cope 1882
†Meniscoessus fragilis Marsh 1889
†Meniscoessus sculptus Marsh 1889
Invalid names: Halodon Marsh 1889 [synonym], Selenacodon Marsh 1889 [synonym], Tripriodon Marsh 1889 [synonym]
G. †Neoplagiaulax Lemoine 1882
G. †Ptilodus Cope 1881
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†Ptilodus formosus Marsh 1889
†Ptilodus mediaevus Cope 1881
†Ptilodus montanus Douglass 1908
†Ptilodus plicatus Cope 1884
†Ptilodus primaevus Lambe 1902
†Ptilodus serratus Marsh 1889
†Ptilodus trovessartianus Cope 1882
Invalid names: Chirox Cope 1884 [synonym]
Invalid names: Polymastodontidae Cope 1884 [empty]
Or. †Pantotheria Marsh 1880
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Fm. †Dicrocynodontidae Marsh
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G. †Dicrocynodon Marsh
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†Dicrocynodon victor Marsh 1880
Invalid names: Diplocynodon Marsh 1880 [replaced]
G. †Ennacodon Marsh
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†Ennacodon crassus Marsh 1887
Invalid names: Enneodon Prangner 1845 [replaced]
Invalid names: Diplocynodontidae Marsh 1887 [replaced]
Fm. †Dryolestidae Marsh 1879
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G. †Amblotherium Owen 1871
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†Amblotherium soricinum Owen 1871
Invalid names: Laodon Marsh 1887 [synonym], Stylacodon Marsh 1879 [synonym], Stylodon Owen 1866 [replaced]
G. †Dryolestes Marsh 1878
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†Dryolestes obtusus Marsh 1880
†Dryolestes priscus Marsh 1878
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Invalid names: Asthenodon segnis Marsh 1887 [synonym], Stylacodon validus Marsh 1880 [synonym]
†Dryolestes tenax Marsh 1889
†Dryolestes vorax Marsh 1879
Invalid names: Asthenodon Marsh 1887 [synonym]
Fm. †Paurodontidae Marsh 1887
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Or. †Symmetrodonta Simpson 1925 [symmetrodont]
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Fm. †Amphidontidae Simpson 1925
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Fm. †Tinodontidae Marsh 1887
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Or. †Triconodonta Osborn 1888 [triconodont]
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Fm. †Triconodontidae Marsh 1887
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Subfm. †Amphilestinae Osborn 1888
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Invalid names: Triconodontinae Hay 1902 [empty]
Subcl. Monodelphia Gill 1872
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Or. Carnivora Bowdich 1821 [carnivoran]
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Subor. †Creodonta Cope 1875 [creodont]
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Superfm. †Mesonychoidae [mesonychian]
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Fm. †Mesonychidae Cope 1875 [condylarth]
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G. †Dissacus Cope 1881
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†Dissacus navajovius Cope 1881
†Dissacus praenuntius Matthew and Granger 1915
†Dissacus saurognathus Wortman 1897
G. †Hapalodectes Matthew 1909
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†Hapalodectes compressus Matthew 1909
†Hapalodectes leptognathus Osborn and Wortman 1892
G. †Harpagolestes Wortman 1901
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†Harpagolestes breviceps Thorpe 1923
†Harpagolestes immanis Matthew 1909
†Harpagolestes macrocephalus Wortman 1901
†Harpagolestes uintensis Scott 1888
Fm. †Triisodontidae Scott 1892
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Invalid names: Arctocyonoidae Trouessart 1885 [empty], Oxyaenoidae Cope 1877 [empty]
Or. Cete Linnaeus 1758
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Subor. Odontocete Flower 1867 [toothed whale]
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Fm. †Agorophiidae Abel 1914
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Fm. Delphinidae Gray 1821 [dolphin]
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Subfm. Delphinapterinae Gill 1871
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G. Delphinapterus Lacépède 1804 [beluga]
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Delphinapterus leucas Pallas 1776 [beluga whale]
†Delphinapterus orcinus Cope 1875
†Delphinapterus ruschenbergeri Cope 1868
†Delphinapterus vermontanus Thompson 1850
Subfm. †Delphininae Flower 1867
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G. †Acrodelphis Abel 1900
G. †Belosphys Cope 1875
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†Belosphys atropius Cope 1868
†Belosphys conradi Leidy 1852
†Belosphys spinosus Cope 1868
G. †Delphinodon Leidy 1869
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†Delphinodon debilis Leidy 1857
†Delphinodon dividum True 1912
†Delphinodon leidyi Hay 1902
†Delphinodon mento Cope 1867
†Delphinodon venustus Leidy 1869
G. Delphinus Linnaeus 1758 [common dolphin]
Subfm. †Eurhinodelphinae Abel 1901
+
G. †Argyrocetus Lydekker 1894
G. †Priscodelphinus Leidy 1851
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†Priscodelphinus grandaevus Leidy 1851
†Priscodelphinus harlani Leidy 1851
†Priscodelphinus lacertosus Cope 1868
†Priscodelphinus stenus Cope 1868
†Priscodelphinus uraeus Cope 1869
Subfm. Monodontinae Miller 1923
+
Invalid names: Stenodelphininae Miller 1923 [empty]
Fm. Iniidae Gray 1846
+
Fm. Physeteridae Gray 1821 [sperm whale]
+
G. †Orycterocetus Leidy 1853
+
†Orycterocetus cornutidens Leidy 1856
†Orycterocetus mediatlanticus Cope 1895
†Orycterocetus quadratidens Leidy 1853
Fm. †Squalodontidae Brandt 1873
+
G. †Squalodon Grateloup 1840
+
†Squalodon atlanticus Leidy 1856
†Squalodon calvertensis Kellogg 1923
†Squalodon crassus Allen 1926
†Squalodon pelagius Leidy 1869
†Squalodon tiedemani Allen 1887
Tr. Ziphiina Gray 1850 [beaked whale]
Or. †Zeuglodontes Pictet 1853
+
Fm. †Basilosauridae Cope 1867
+
G. †Basilosaurus Harlan 1834
+
†Basilosaurus brachyspondylus Müller 1849
†Basilosaurus cetoides Owen 1839
Invalid names: Zeuglodon Owen 1839 [synonym]
Fm. †Dorudontidae Miller 1923
+
Invalid names: Archaeoceti Flower 1883 [replaced]
Invalid names: Mysticete Gray 1864 [empty]
Or. Chiroptera Blumenbach 1779 [bat]
+
Subor. Animalivora Gill 1872
+
Superfm. Vespertilionoidae
+
Fm. Vespertilionidae Gray 1821 [vesper bat]
+
G. Myotis Kaup 1829
+
Myotis myotis Borkhausen 1797 [greater mouse-eared bat]
Myotis subulatus Say 1823
G. Pipistrellus Kaup 1829 [pipistrelle bat]
+
†Pipistrellus anemophilus Cope 1880
Pipistrellus pipistrellus Schreber 1774
Invalid names: Vesperugo Cope 1873 [synonym]
Invalid names: Vespertilioninae Gray 1821 [empty]
Invalid names: Microchiroptera Dobson 1875 [synonym], Phyllostomoidae [empty]
Or. Insectivora Bowdich 1821 [insectivoran]
+
Subor. Lipotyphla Haeckel 1866
+
Superfm. Erinaceoidae Gill 1872
+
Fm. Erinaceidae Fischer von Waldheim 1817 [hedgehog]
+
Subfm. Erinaceinae Fischer de Waldheim 1817
+
Fm. †Leptictidae Gill 1872
+
Subfm. †Didelphodontinae Matthew 1918
+
Subfm. †Leptictinae Gill 1872
+
G. †Diacodon Cope 1875
+
†Diacodon alticuspis Cope 1875
†Diacodon bicuspis Cope 1880
†Diacodon puercensis Matthew 1918
Invalid names: Palaeictops Matthew 1899 [synonym]
G. †Ictops Leidy 1868
+
†Ictops acutidens Douglass 1902
†Ictops bullatus Matthew 1899
†Ictops dakotensis Leidy 1868
†Ictops intermedius Douglass 1905
†Ictops major Douglass 1905
†Ictops montanus Douglass 1905
†Ictops porcinus Leidy 1869
†Ictops tenuis Douglass 1905
†Ictops thomsoni Matthew 1903
Invalid names: Nanohyus Leidy 1869 [synonym]
Superfm. †Pantolestoidae Cope 1887
+
Fm. †Pantolestidae Cope 1884
+
G. †Palaeosinopa Matthew 1901
+
†Palaeosinopa didelphoides Cope 1881
†Palaeosinopa lutreola Matthew 1918
†Palaeosinopa veterrima Matthew 1901
G. †Pantolestes Cope 1872
+
†Pantolestes elegans Marsh 1872
†Pantolestes intermedius Matthew 1909
†Pantolestes longicaudus Cope 1872
†Pantolestes natans Matthew 1909
†Pantolestes phocipes Matthew 1909
Invalid names: Anisacodon Marsh 1872 [synonym]
Superfm. Soricoidae Gill 1872
+
Fm. †Nyctitheriidae Simpson 1928
+
G. †Nyctitherium Marsh 1872
+
†Nyctitherium celatus Cope 1875
†Nyctitherium curtidens Matthew 1909
†Nyctitherium nitidum Marsh 1872
†Nyctitherium priscum Marsh 1872
†Nyctitherium serotinum Marsh 1872
†Nyctitherium velox Marsh 1872
Invalid names: Nyctilestes Marsh 1872 [synonym], Talpavus Marsh 1872 [synonym]
Fm. Soricidae Fischer 1814 [shrew]
+
G. Blarina Gray 1838 [American short-tailed shrew]
+
Blarina brevicauda Say 1823 [northern short-tailed shrew]
+
Invalid names: Sorex talpoides Grapper 1830 [synonym]
†Blarina simplicidens Cope 1899
G. Cryptotis Pomel 1848 [small-eared shrew]
+
Cryptotis floridana Merriam 1895
Cryptotis parva Say 1823 [North American least shrew]
G. †Microsorex Preble 1910
+
Microsorex hoyi Baird 1858 [American pygmy shrew]
†Microsorex minutus Brown 1908
G. Sorex Linnaeus 1758 [long-tailed shrew]
+
Sorex araneus Linnaeus 1758 [common shrew]
Sorex frankstounensis Peterson 1926
Sorex fumeus Miller 1895 [smoky shrew]
Sorex obscurus Merriam 1895
Sorex personatus Brown 1908
Fm. Talpidae Fischer de Waldheim 1817 [mole]
+
G. Scalopus Geoffroy 1803
+
Scalopus aquaticus Linnaeus 1758 [eastern mole]
Invalid names: Scalops Illinger 1811 [synonym]
G. Scapanus Pomel 1848
+
Scapanus latimanus Bachman 1842 [broad-footed mole]
Scapanus townsendii Bachman 1839
G. Talpa Linnaeus 1758
+
Talpa europaea Linnaeus 1758 [European mole]
†Talpa incerta Matthew 1924
†Talpa platybrachys Douglass 1903
Superfm. Tenrecoidae Hay 1930
+
Fm. †Apternodontidae Matthew 1910
+
Invalid names: Centetoidea Gill 1872 [synonym]
Subor. Menotyphla Haeckel
+
Fm. †Adapisoricidae Schlosser 1887
+
Fm. †Plagiomenidae Matthew 1918
+
Fm. Tupaiidae Gray 1825 [tree shrew]
+
G. †Entomolestes Matthew 1909
+
†Entomolestes grangeri Matthew 1909
†Entomolestes nitens Matthew 1918
Invalid names: Proglires Osborn 1902 [empty]
Or. †Taeniodonta Cope 1876 [taeniodont]
+
Fm. †Conoryctidae Wortman 1896
+
G. †Onychodectes Cope 1888
+
†Onychodectes rarus Osborn and Earle 1895
†Onychodectes tisonensis Cope 1888
Fm. †Stylinodontidae Marsh 1875
+
G. †Calamodon Cope 1874
+
†Calamodon arcamoenus Cope 1874
†Calamodon novomehicanus Cope 1874
†Calamodon simplex Cope 1874
G. †Wortmania Hay 1899
+
†Wortmania otariidens Cope 1885
Invalid names: Hemiganus Cope 1882 [replaced]
Invalid names: Calamodontidae [synonym]
Superor. Ungulata Linnaeus 1766
+
Or. Sirenia Illiger 1811 [sirenian]
+
Invalid names: Desmostyliformes Hay 1923 [empty], Trichechiformes Hay 1923 [empty]
Or. Xenarthra Cope 1889 [edentate]
+
Subor. Hicanodonta Ameghino 1889
+
Superfm. Dasypodoidae Gray 1821
+
Fm. Dasypodidae Gray 1821 [armadillo]
+
Invalid names: Chlamytheriinae Lydekker 1894 [empty]
Superfm. †Glyptodontoidae Gray 1869
+
Fm. †Glyptodontidae Burmeister 1879 [glyptodon]
+
G. †Glyptodon Owen 1839
+
†Glyptodon clavipes Owen 1839
†Glyptodon petaliferus Cope 1888
†Glyptodon rivapacis Hay 1923
G. †Glyptotherium Osborn 1903
+
†Glyptotherium arizonae Gidley 1926
†Glyptotherium texanum Osborn 1903
Fm. †Hoplophoridae Huxley 1864
+
G. †Brachyostracon Brown 1912
+
†Brachyostracon cylindricus Brown 1912
†Brachyostracon mexicanus Cuataparo and Ramirez 1875
Subor. †Palaeanodonta Matthew 1918
+
Fm. †Epoicotheriidae Simpson 1927
+
G. †Epoicotherium Simpson 1927
+
†Epoicotherium unicum Douglass 1905
Invalid names: Xenotherium Douglass 1905 [replaced]
Fm. †Metacheiromyidae Wortman 1903
+
G. †Metacheiromys Wortman 1903
+
†Metacheiromys dasypus Osborn 1904
†Metacheiromys marshi Wortman 1903
†Metacheiromys tatusia Osborn 1904
Subor. Tardigrada Latham and Davies 1795
+
Superfm. †Megatherioidae Gray 1821
+
Fm. †Megatheriidae Gray 1821
+
Subfm. †Megalonychinae Trouessart 1904
+
G. †Megalonyx Harlan 1825
+
†Megalonyx curvidens Matthew 1924
†Megalonyx dissimilis Leidy 1855
†Megalonyx gigas Marsh 1874
†Megalonyx jeffersonii Desmarest 1822 [Jefferson's ground sloth]
†Megalonyx leidyi Lindahl 1892
†Megalonyx leptostomus Cope 1893
†Megalonyx loxodon Cope 1871
†Megalonyx scalper Cope 1899
†Megalonyx sierrensis Sinclair 1905 [sloth]
†Megalonyx tortulus Cope 1871
†Megalonyx validus Leidy 1868
†Megalonyx wheatleyi Cope 1871
Subfm. †Megatheriinae Gill 1872
+
Subfm. †Mylodontinae Gill 1872
+
G. †Mylodon Owen 1859
+
†Mylodon freudenbergi Hay 1930
†Mylodon garmani Allen 1913
†Mylodon harlani Owen 1840 [Harlan's ground sloth]
+
†Mylodon harlani tenuiceps Stock 1917
Invalid names: Paramylodon nebrascensis Brown 1903 [synonym]
†Mylodon renidens Cope 1895
†Mylodon sodalis Cope 1878
†Mylodon sulcidens Cope 1895
Invalid names: Paramylodon Brown 1903 [synonym]
Subfm. †Nothrotheriinae Ameghino 1920
+
G. †Nothrotherium Lydekker 1889
+
†Nothrotherium maquinense Hay 1930
†Nothrotherium mexicanum Freudenberg 1921
†Nothrotherium shastense Sinclair 1905 [Shasta ground sloth]
+
Invalid names: Nothrotherium graciliceps Stock 1913 [synonym]
†Nothrotherium texanum Hay 1916
Invalid names: Coelodon Lund [replaced]
Invalid names: Anicanodonta Ameghino 1889 [synonym]
Invalid names: Edentata Cuvier 1798 [synonym]
Invalid names: Placentalia Owen 1837 [synonym]
Invalid names: Didelphia Cope 1889 [empty]
Cl. Reptilia Laurenti 1768 [reptile]
hide
Subcl. Diplotremata Hay 1930
+
Superor. Dinosauria Owen 1842 [dinosaur]
+
Or. †Orthopoda Cope 1866
+
Superfm. †Ceratopsoidae Hay 1902
+
Fm. †Ceratopsidae Marsh 1888 [ceratopsid]
+
G. †Ceratops Marsh 1888
+
†Ceratops montanus Marsh 1888
†Ceratops paucidens Marsh 1889
Invalid names: Proceratops Lull 1906 [synonym]
G. †Chasmosaurus Lambe 1914
+
†Chasmosaurus belli Lambe 1902
Invalid names: Protorosaurus Lambe 1914 [replaced]
G. †Monoclonius Cope 1876
+
†Monoclonius crassus Cope 1876
†Monoclonius cutleri Brown 1917
†Monoclonius dawsoni Lambe 1902
†Monoclonius fissus Cope 1889
†Monoclonius flexus Brown 1914
†Monoclonius nasicornus Brown 1917
†Monoclonius recurvicornis Cope 1889
G. †Styracosaurus Lambe 1913
+
†Styracosaurus albertensis Lambe 1913
†Styracosaurus sphenocerus Cope 1889
G. †Triceratops Marsh 1889
+
†Triceratops alticornis Marsh 1887
†Triceratops brevicornus Hatcher and Lull 1905
†Triceratops calicornis Marsh 1898
†Triceratops elatus Marsh 1891
†Triceratops flabellatus Marsh 1889
†Triceratops galeus Marsh 1889
†Triceratops horridus Marsh 1889
†Triceratops ingens Lull 1915
†Triceratops obtusus Marsh 1898
†Triceratops prorsus Marsh 1890
†Triceratops serratus Marsh 1890
†Triceratops sulcatus Marsh 1890
Invalid names: Ceratopsia Marsh 1890 [synonym]
Superfm. †Iguanodontoidae Hay 1902
+
Fm. †Camptosauridae Marsh 1885 [camptosaurid]
+
G. †Camptosaurus Marsh 1885
+
†Camptosaurus amplus Marsh 1879
†Camptosaurus browni Gilmore 1909
†Camptosaurus depressus Gilmore 1909
†Camptosaurus dispar Marsh 1879
†Camptosaurus medius Marsh 1894
†Camptosaurus nanus Marsh 1894
Invalid names: Camptonotus Marsh 1879 [replaced]
Invalid names: Camptonotidae Marsh 1881 [synonym]
Fm. †Hadrosauridae Cope 1869 [hadrosaurid]
+
Subfm. †Hadrosaurinae Lambe 1918 [hadrosaurine]
+
G. †Dysganus Cope 1876
+
†Dysganus bicarinatus Cope 1876
†Dysganus encaustus Cope 1876
†Dysganus haydenianus Cope 1876
†Dysganus peiganus Cope 1876
G. †Hadrosaurus Leidy 1858
+
†Hadrosaurus cavatus Cope 1871
†Hadrosaurus foulkii Leidy 1858
†Hadrosaurus minor Marsh 1870
†Hadrosaurus tripos Cope 1869
G. †Kritosaurus Brown 1910
+
†Kritosaurus incurvimanus Parks 1919
†Kritosaurus marginatus Lambe 1902
†Kritosaurus navajovius Brown 1910
†Kritosaurus navajovius Brown 1910
†Kritosaurus notabilis Lambe 1914
Invalid names: Gryposaurus Lambe 1914 [synonym]
G. †Thespesius Leidy 1856
+
†Thespesius edmontoni Gilmore 1924
†Thespesius saskatchewanensis Sternberg 1926
G. †Trachodon Leidy 1856
+
†Trachodon altidens Lambe 1902
†Trachodon breviceps Marsh 1889
†Trachodon calamarius Cope 1876
†Trachodon longiceps Marsh 1890
†Trachodon mirabilis Leidy 1856
†Trachodon pentagonus Cope 1876
†Trachodon perangulatus Cope 1876
†Trachodon selwyni Lambe 1902
Invalid names: Trachodontinae Tornier 1913 [synonym]
Subfm. †Lambeosaurinae Parks 1923 [lambeosaurine]
+
G. †Corythosaurus Brown 1914
+
†Corythosaurus casuarius Brown 1914
†Corythosaurus excavatus Gilmore 1923
†Corythosaurus intermedius Parks 1923
Invalid names: Trachodontidae Lydekker 1888 [synonym]
Fm. †Hypsilophodontidae Dollo 1882 [hypsilophodontid]
+
G. †Thescelosaurus Gilmore 1913
+
†Thescelosaurus neglectus Gilmore 1913
†Thescelosaurus warreni Parks 1926
Fm. †Iguanodontidae Bonaparte 1850 [iguanodontid]
Fm. †Troodontidae Gilmore 1924
+
G. †Troodon Leidy 1856
+
†Troodon brevis Lambe 1918
†Troodon formosus Leidy 1856
†Troodon validus Lambe 1902
Invalid names: Stegoceras Lambe 1902 [synonym]
Invalid names: Laosauridae Marsh 1895 [empty], Nanosauridae Marsh 1878 [empty]
Invalid names: Ornithischia Seeley 1888 [synonym], Predentata Marsh 1894 [synonym], Stegosauroidae Hay 1902 [empty]
Or. Saurischia Seeley 1888 [saurischian]
+
Subor. †Sauropoda Marsh 1878 [sauropod]
+
Fm. †Atlantosauridae Marsh 1877 [atlantosaurid]
+
G. †Apatosaurus Marsh 1877
+
†Apatosaurus ajax Marsh 1877
†Apatosaurus laticollis Marsh 1879
†Apatosaurus louisae Holland 1915
†Apatosaurus minimus Mook 1917
Fm. †Brachiosauridae Riggs 1904 [brachiosaurid]
+
Fm. †Camarasauridae Cope 1877 [camarasaurid]
+
G. †Astrodon Johnston 1859
+
†Astrodon altus Marsh 1888
†Astrodon johnstoni Leidy 1865
†Astrodon montanus Marsh 1896
†Astrodon nanus Marsh 1888
Invalid names: Pleurocoelus Marsh 1888 [synonym]
G. †Camarasaurus Cope 1877
+
†Camarasaurus agilis Marsh 1889
†Camarasaurus lentus Marsh 1889
†Camarasaurus leptodirus Cope 1879
†Camarasaurus robustus Marsh 1878
†Camarasaurus supremus Cope 1877
Invalid names: Morosaurus Marsh 1878 [synonym]
G. †Haplocanthosaurus Hatcher 1903
+
†Haplocanthosaurus priscus Hatcher 1903
†Haplocanthosaurus utterbacki Hatcher 1903
Invalid names: Morosauridae Marsh 1882 [synonym], Pleurocoelidae Marsh 1888 [synonym]
Fm. †Diplodocidae Marsh 1884 [diplodocid]
+
G. †Amphicoelias Cope 1877
+
†Amphicoelias altus Cope 1877
†Amphicoelias fragillimus Cope 1878
†Amphicoelias latus Cope 1877
G. †Diplodocus Marsh 1878
+
†Diplodocus carnegii Hatcher 1901
†Diplodocus hayi Holland 1924
†Diplodocus lacustris Marsh 1884
†Diplodocus longus Marsh 1878
Invalid names: Opisthocoelia Owen 1859 [synonym]
Subor. Theropoda Marsh 1881 [theropod]
+
Superfm. †Megalosauroidae Nopcsa 1928
+
Fm. †Anchisauridae Marsh 1885 [anchisaurid]
+
G. †Anchisaurus Marsh 1885
+
†Anchisaurus colurus Marsh 1891
†Anchisaurus polyzelus Hitchcock 1865
†Anchisaurus solus Marsh 1892
Invalid names: Megadactylus Hitchcock 1865 [replaced]
G. †Clepsysaurus Lea 1851
+
†Clepsysaurus fraserianus Cope 1878
†Clepsysaurus pennsylvanicus Lea 1851
†Clepsysaurus veatleianus Cope 1877
G. †Palaeoctonus Cope 1877
+
†Palaeoctonus appalachianus Cope 1877
†Palaeoctonus dumblianus Cope 1893
†Palaeoctonus orthodon Cope 1893
G. †Suchoprion Cope 1877
+
†Suchoprion aulacodus Cope 1877
†Suchoprion cyphodon Cope 1877
†Suchoprion sulcidens Cope 1878
Fm. †Deinodontidae Brown 1914
+
Subfm. †Deinodontinae Matthew and Brown 1922
+
G. †Albertosaurus Osborn 1905 [Alberta lizard]
+
†Albertosaurus arctunguis Parks 1928
†Albertosaurus sarcophagus Osborn 1905
G. †Deinodon Leidy 1856
+
†Deinodon falculus Cope 1876
†Deinodon hazenianus Hay 1902
†Deinodon incrassatus Cope 1876
†Deinodon lateralis Cope 1876
Invalid names: Aublysodon Leidy 1868 [synonym]
G. †Dryptosaurus Marsh 1877
+
†Dryptosaurus aquilunguis Cope 1866
†Dryptosaurus medius Marsh 1888
†Dryptosaurus potens Lull 1911
Invalid names: Laelaps Cope 1866 [replaced]
G. †Gorgosaurus Lambe 1914
+
†Gorgosaurus libratus Lambe 1914
†Gorgosaurus sternbergi Matthew and Brown 1922
Subfm. †Dromaeosaurinae Matthew and Brown 1922
+
G. †Dromaeosaurus Matthew and Brown 1922
+
†Dromaeosaurus albertensis Matthew and Brown 1922
†Dromaeosaurus cristatus Cope 1876
†Dromaeosaurus explanatus Cope 1876
†Dromaeosaurus gracilis Marsh 1888
†Dromaeosaurus laevifrons Cope 1876
Subfm. †Tyrannosaurinae Matthew and Brown 1922 [tyrannosaurine]
+
G. †Tyrannosaurus Osborn 1905 [tyrant lizard]
+
†Tyrannosaurus amplus Marsh 1892
†Tyrannosaurus rex Osborn 1905 [tyrant lizard king]
+
Invalid names: Dynamosaurus imperiosus Osborn 1905 [synonym]
Invalid names: Dynamosaurus Osborn 1905 [synonym]
Fm. †Megalosauridae Fitzinger 1843
+
G. †Antrodemus Leidy 1873
+
†Antrodemus sulcatus Marsh 1896
†Antrodemus trihedrodon Cope 1877
Invalid names: Allosaurus Marsh 1877 [synonym]
Fm. †Ornithomimidae Marsh 1890 [ornithomimid]
+
G. †Ornithomimus Marsh 1890
+
†Ornithomimus altus Lambe 1902
†Ornithomimus grandis Marsh 1890
†Ornithomimus minutus Marsh 1892
†Ornithomimus sedens Marsh 1892
†Ornithomimus tenuis Marsh 1890
†Ornithomimus velox Marsh 1890
Invalid names: Struthiomimus Osborn 1916 [synonym]
Invalid names: Labrosauridae Marsh 1882 [empty]
Invalid names: Coeluroidae Hay 1930 [empty], Zanclodontoidae Hay 1930 [empty]
Superor. Loricata Merrem 1820
+
Or. Crocodilomorphi Hay 1930 [crocodilian]
+
Subor. Crocodyliformes Hay 1930
+
Fm. Crocodylidae Cuvier 1807 [crocodile]
+
G. Alligator Daudin 1809 [alligator]
+
Alligator mississippiensis Daudin 1801 [American alligator]
†Alligator thomsoni Mook 1923
G. †Allognathosuchus Mook 1921
+
†Allognathosuchus heterodon Cope 1873
†Allognathosuchus polyodon Cope 1873
†Allognathosuchus wartheni Case 1925
G. †Brachychampsa Gilmore 1911
+
†Brachychampsa montana Gilmore 1911
†Brachychampsa perrugosa Cope 1874
G. Crocodylus Laurenti 1768 [crocodile]
+
†Crocodylus acer Cope 1882
†Crocodylus affinis Marsh 1871
†Crocodylus antiquus Leidy 1852
†Crocodylus aptus Leidy 1869
†Crocodylus chamensis Cope 1874
†Crocodylus clavis Cope 1871
†Crocodylus contusor Cope 1867
†Crocodylus elliotti Leidy 1871
†Crocodylus fastigiatus Leidy 1851
†Crocodylus grinnelli Marsh 1871
†Crocodylus grypus Cope 1875
†Crocodylus humilis Leidy 1856
†Crocodylus liodon Marsh 1871
†Crocodylus marylandicus Clarke 1895
Crocodylus niloticus Laurenti 1768 [Nile crocodile]
†Crocodylus parvus Osborn et al. 1878
†Crocodylus rugosus Emmons 1858
†Crocodylus sericodon Cope 1867
†Crocodylus serratus Cope 1872
†Crocodylus sicarius Cope 1869
†Crocodylus solaris Marsh 1877
†Crocodylus squankensis Marsh 1869
†Crocodylus stavelianus Cope 1885
†Crocodylus subulatus Cope 1872
†Crocodylus sulciferus Cope 1872
†Crocodylus vorax Troxell 1925
†Crocodylus wheelerii Cope 1875
G. †Leidyosuchus Lambe 1907
+
†Leidyosuchus canadensis Lambe 1907
†Leidyosuchus sternbergii Gilmore 1910
Invalid names: Alligatoridae Gray 1844 [synonym]
Invalid names: Eusuchia Huxley 1875 [synonym]
Invalid names: Gavialiformes Hay 1930 [empty], Goniopholidiformes Hay 1930 [empty]
Or. †Phytosauromorphi Hay 1930
+
Invalid names: Aetosauriformes Hay 1930 [empty], Desmatosuchiformes Hay 1930 [empty], Parasuchia Huxley [synonym], Phytosauriformes Hay 1930 [empty]
Or. †Pterosauri Kaup 1834 [pterosaur]
+
Subor. †Ornithocephaliformes Hay 1930
+
Fm. †Ornithocephalidae Hay 1902
+
Subfm. †Ornithocephalinae Hay 1930
+
Invalid names: Pterodactylidae Bonaparte 1838 [synonym]
Fm. †Pteranodontidae Marsh 1876
+
Invalid names: Nyctosaurinae Hay 1902 [empty], Ornithocheiridae Seeley 1870 [synonym], Pteranodontinae Williston 1892 [empty]
Invalid names: Pterodactyloidea Plieninger 1901 [synonym], Tribelesodontidae Nopcsa 1923 [empty]
Invalid names: Eoditremata Hay 1930 [empty]
Subcl. †Poeciloglyptica Hay 1930
+
Superor. †Catacritosauria Hay 1930
+
Or. †Ichthyosauria de Blainville 1835 [ichthyosaur]
+
Fm. †Ophthalmosauridae Andrews 1910
+
G. †Ophthalmosaurus Seeley 1874
+
†Ophthalmosaurus discus Marsh 1879
+
Invalid names: Microdontosaurus petersonii Gilmore 1902 [synonym]
†Ophthalmosaurus icenicus Seeley 1874
†Ophthalmosaurus marshi Knight 1903
†Ophthalmosaurus natans Marsh 1879
†Ophthalmosaurus reedi Gilmore 1907
†Ophthalmosaurus robustus Gilmore 1905
Invalid names: Baptanodon Seeley 1874 [synonym], Microdontosaurus Gilmore 1902 [synonym]
Fm. †Proteosauridae Hay 1902
+
G. †Proteosaurus Home 1819
+
†Proteosaurus platyodon Conybeare 1822
Invalid names: Ichthyosaurus Koenig 1818 [synonym]
Invalid names: Ichthyopterygia Owen 1840 [synonym]
Or. †Plesiosauria de Blainville 1835 [plesiosaur]
+
Fm. †Elasmosauridae Cope 1869 [elasmosaur]
+
G. †Elasmosaurus Cope 1868
+
†Elasmosaurus intermedius Cope 1894
†Elasmosaurus ischiadicus Williston 1903
†Elasmosaurus marshi Williston 1906
†Elasmosaurus nobilis Williston 1906
†Elasmosaurus platyurus Cope 1868
†Elasmosaurus serpentinus Cope 1877
†Elasmosaurus snowii Williston 1890
†Elasmosaurus sternbergi Williston 1906
G. †Piptomerus Cope 1887
+
†Piptomerus hexagonus Cope 1887
†Piptomerus megaloporus Cope 1887
†Piptomerus microporus Cope 1887
Fm. †Polycotylidae Williston 1908
+
G. †Polycotylus Cope 1869
+
†Polycotylus dolichopus Williston 1906
†Polycotylus latipinnis Cope 1869
G. †Trinacromerum Cragin 1888
+
†Trinacromerum anonymum Williston 1903
†Trinacromerum bentonianum Cragin 1888
†Trinacromerum latimanus Williston 1908
†Trinacromerum osborni Williston 1902
Invalid names: Dolichorhynchops Williston 1902 [synonym]
Invalid names: Plesiosauriformes Hay 1930 [empty], Sauropterygia Owen 1859 [synonym]
Invalid names: Omphalosauria Huene 1923 [empty]
Superor. †Elpidosauria Hay 1930
+
Or. †Sphenacodontomorphi Hay 1930
+
Subor. †Edaphosauriformes Hay 1930
+
Fm. †Edaphosauridae Cope 1882
+
G. †Edaphosaurus Cope 1882
+
†Edaphosaurus claviger Cope 1886
†Edaphosaurus cruciger Cope 1878
†Edaphosaurus microdus Cope 1884
†Edaphosaurus novomexicanus Williston and Case 1913
†Edaphosaurus pogonias Cope 1882
†Edaphosaurus raymondi Case 1908
Invalid names: Naosaurus Cope 1886 [synonym]
Invalid names: Naosauridae Case 1907 [synonym]
Invalid names: Edaphosauria Cope 1882 [replaced], Naosauri Jaekel 1910 [replaced]
Invalid names: Caseiformes Hay 1930 [empty], Poliosauriformes Hay 1930 [empty], Sphenacodontiformes Hay 1930 [empty]
Invalid names: Astatoglyptica Hay 1930 [empty]
Invalid names: Atremata Hay 1930 [empty], Monotreta Hay 1930 [empty]
G. †Plesiornis Hitchcock 1858
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†Plesiornis giganteus Hitchcock 1889
†Plesiornis mirabilis Hitchcock 1865
†Plesiornis pilulatus Hitchcock 1858
G. †Argoides Hitchcock 1845
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†Argoides isodactyletus Hitchcock 1841
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Invalid names: Argozoum paridigitatum Hitchcock 1848 [synonym]
†Argoides macrodactylotus Hitchcock 1841
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Invalid names: Argozoum disparidigitatum Hitchcock 1848 [synonym]
†Argoides redfieldianus Hitchcock 1844
†Argoides robustus Hitchcock 1837
Invalid names: Argozoum Hitchcock 1848 [synonym]
G. †Fulicopus Hitchcock 1845
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†Fulicopus giganteus Hitchcock 1858
†Fulicopus lyellianus Hitchcock 1843
Invalid names: Amblonyx Hitchcock 1858 [synonym]
G. †Batrachopus Hitchcock 1845
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†Batrachopus bellus Hitchcock 1858
†Batrachopus deweyanus Hitchcock 1843
†Batrachopus dispar Lull 1904
†Batrachopus gracilior Hitchcock 1862
†Batrachopus gracilis Hitchcock 1845
Invalid names: Anisichnus Hitchcock 1871 [synonym], Batrachoidichnites Hitchcock 1844 [synonym]
G. †Steropoides Hitchcock 1845
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†Steropoides elegans Hitchcock 1841
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Invalid names: Steropoides diversus Hitchcock 1836 [synonym]
†Steropoides infelix Hay 1902
†Steropoides ingens Hitchcock 1836
†Steropoides loripes Hitchcock 1848
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Invalid names: Steropoides divaricatus Hitchcock 1837 [synonym], Tridentipes insignis Hitchcock 1858 [synonym]
†Steropoides uncus Hitchcock 1858
Invalid names: Tridentipes Hitchcock 1858 [synonym]
G. †Sillimanius Hitchcock 1845
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†Sillimanius gracilior Hitchcock 1841
†Sillimanius tetradactylus Hitchcock 1836
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Invalid names: Ornithopus gallinaceus Hitchcock 1845 [synonym]
G. †Platypterna Hitchcock 1845
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†Platypterna concamerata Hitchcock 1848
†Platypterna deaniana Hitchcock 1837
†Platypterna delicatula Hitchcock 1841
†Platypterna digitigrada Hitchcock 1858
†Platypterna gracillima Hitchcock 1858
†Platypterna recta Hitchcock 1848
†Platypterna tenuis Hitchcock 1837
G. †Orthodactylus Hitchcock 1858
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†Orthodactylus floriferus Hitchcock 1858
†Orthodactylus introvergens Hitchcock 1858
†Orthodactylus linearis Hitchcock 1858
G. †Gigandipus Hitchcock 1855
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†Gigandipus caudatus Hitchcock 1855
Invalid names: Gigantitherium Hitchcock 1858 [synonym]
G. †Nanopus Marsh 1894
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†Nanopus caudatus Marsh 1894
†Nanopus maximus Gilmore 1927
†Nanopus merriami Gilmore 1926
†Nanopus vetustus Matthew 1910
G. †Anticheiropus Hitchcock 1865
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†Anticheiropus hamatus Hitchcock 1865
†Anticheiropus pilulatus Hitchcock 1865
G. †Harpedactylus Hitchcock 1845
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†Harpedactylus crassus Hitchcock 1862
†Harpedactylus gracilior Hitchcock 1862
†Harpedactylus tenuissimus Hitchcock 1837
G. †Antipus Hitchcock 1858
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†Antipus bifidus Hitchcock 1858
†Antipus flexiloquus Hitchcock 1858
G. †Trihamus Hitchcock 1862
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†Trihamus elegans Hitchcock 1862
†Trihamus magnus Hitchcock 1889
G. †Exocampe Hitchcock 1858
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†Exocampe arcta Hitchcock 1858
†Exocampe minima Hitchcock 1862
†Exocampe ornata Hitchcock 1858
G. †Plectropterna Hitchcock 1845
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†Plectropterna angusta Hitchcock 1858
†Plectropterna elegans Hitchcock 1889
†Plectropterna gracilis Hitchcock 1858
†Plectropterna lineans Hitchcock 1858
†Plectropterna minitans Hitchcock 1837
Invalid names: Tarsoplectrus Lull 1904 [synonym]
G. †Polemarchus Hitchcock 1845
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†Polemarchus gigas Hitchcock 1845
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Invalid names: Sauroidichnites polemarchius Hitchcock 1837 [synonym]
G. †Tarsodactylus Hitchcock 1858
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†Tarsodactylus caudatus Hitchcock 1858
†Tarsodactylus expansus Hitchcock 1866
G. †Helcura Hitchcock 1848
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†Helcura anguinea Hitchcock 1858
†Helcura littoralis Hitchcock 1848
†Helcura surgens Hitchcock 1858
G. †Eupalamopus Hay 1902
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G. †Palamopus Hitchcock 1845
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†Palamopus anomalus Hitchcock 1845
†Palamopus divaricans Hitchcock 1848
†Palamopus gracilipes Hitchcock 1858
†Palamopus palmatus Hitchcock 1845
†Palamopus rogersianus Hitchcock 1843
Invalid names: Macropterna Hitchcock 1848 [synonym]
G. †Sustenodactylus Lull 1904
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†Sustenodactylus curvatus Hitchcock 1858
Invalid names: Stenodactylus Hitchcock 1858 [replaced]
G. †Hoplichnus Hitchcock 1848
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†Hoplichnus equus Hitchcock 1858
†Hoplichnus quadrupedans Hitchcock 1848
G. †Typopus Hitchcock 1845
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†Typopus abnormis Hitchcock 1844
†Typopus gracilis Hitchcock 1858
G. †Batrachoides Hitchcock 1858
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†Batrachoides antiquior Hitchcock 1858
†Batrachoides nidificans Hitchcock 1858
G. †Cimoliosaurus Leidy 1851
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†Cimoliosaurus laramiensis Knight 1900
†Cimoliosaurus magnus Leidy 1851
G. Ajaja Reichenbach 1853 [spoonbill]
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Ajaja ajaja Linnaeus 1758 [roseate spoonbill]
G. †Asperipes Matthew 1903
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†Asperipes avipes Matthew 1903
†Asperipes caudifer Dawson 1895
†Asperipes flexilis Matthew 1904
G. †Hylopus Dawson 1894
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†Hylopus hardingi Dawson 1895
†Hylopus hermitanus Gilmore 1927
†Hylopus logani Dawson 1894
†Hylopus minor Dawson 1895
†Hylopus variabilis Matthew 1910
G. †Cursipes Matthew 1903
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†Cursipes dawsoni Matthew 1903
†Cursipes levis Matthew 1904
G. †Barillopus Matthew 1903
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†Barillopus arctus Matthew 1904
†Barillopus confusus Matthew 1904
†Barillopus unguifer Matthew 1903
G. †Ornithoides Matthew 1903
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†Ornithoides adamsi Matthew 1904
†Ornithoides trifidus Dawson 1895
G. †Baropezia Matthew 1903
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†Baropezia abscissa Matthew 1904
†Baropezia eakini Gilmore 1926
†Baropezia sydnensis Dawson 1891
G. †Chelichnus Jardine 1850
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†Chelichnus duncani Owen 1842
†Chelichnus wymanianus Lea 1856
G. †Palaeosauropus Hay 1902
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†Palaeosauropus antiquior Dawson 1882
†Palaeosauropus primaevus Lea 1849
G. †Barypodus Gilmore 1926
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†Barypodus metszeri Gilmore 1927
†Barypodus palmatus Gilmore 1926
†Barypodus tridactylus Gilmore 1927
G. †Batrachichnus Woodworth 1900
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†Batrachichnus celer Matthew 1903
†Batrachichnus delicatulus Lull 1918
†Batrachichnus jacksonensis Butts 1891
†Batrachichnus obscurus Gilmore 1927
†Batrachichnus plainvillensis Woodworth 1900
G. †Dromopus Marsh 1894
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†Dromopus aduncus Branson 1910
†Dromopus agilis Marsh 1894
†Dromopus velox Matthew 1904
†Dromopus woodworthi Lull 1920
G. †Hyloidichnus Gilmore 1927
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†Hyloidichnus bifurcatus Gilmore 1927
†Hyloidichnus whitei Gilmore 1928
G. †Laoporus Lull 1918
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†Laoporus coloradensis Henderson 1924
†Laoporus noblei Lull 1918
†Laoporus schucherti Lull 1918
G. †Baropus Marsh 1894
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†Baropus coconinoensis Gilmore 1927
†Baropus lentus Marsh 1894
G. †Agostopus Gilmore 1926
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†Agostopus matheri Gilmore 1926
†Agostopus medius Gilmore 1927
G. †Ammobatrachus Gilmore 1928
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†Ammobatrachus montanensis Gilmore 1928
†Ammobatrachus turbatans Gilmore 1928
G. †Dromillopus Matthew 1904
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†Dromillopus obtusus Matthew 1904
†Dromillopus parvus Gilmore 1927
†Dromillopus quadratus Matthew 1904
†Dromillopus quadrifidus Matthew 1904