PTRM V92067 (Cretaceous of the United States)

Where: Bowman County, North Dakota (46.1° N, 103.3° W: paleocoordinates 52.2° N, 76.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Hell Creek Formation (Montana Group), Lancian (70.6 - 66.0 Ma)

• datum -36.18, K-T seection 9317

• bed-level stratigraphic resolution

Environment/lithology: crevasse splay; sandstone

Size classes: macrofossils, mesofossils

Primary reference: J. P. Hunter and D. A. Pearson. 1996. First record of Lancian (Late Cretaceous) mammals from the Hell Creek Formation of southwestern North Dakota, USA. Cretaceous Research 17 [J. Alroy/J. Alroy/J. Ju]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 14610: authorized by John Alroy, entered by John Alroy on 12.04.1997, edited by Matthew Carrano, Roger Benson and Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

• about the middle of the formationalthough there are 2500 vertebrate specimens, only 34 are identifiable mammalsbelow PITA Flats (see): Hunter 1999
Show authors, comments, and common names
Mammalia
 Mammalia -
Mammalia indet.3, ? Mammalia indet.3
 Theriamorpha -
Theria indet.3
Theria indet.3 Parker and Haswell 1897 mammal
 Theriamorpha - Pediomyidae
"Pediomys cf. florencae" = Protolambda florencae
"Pediomys cf. florencae" = Protolambda florencae Clemens 1966 metatherian
 Theriamorpha - Stagodontidae
Didelphodon sp.3, Didelphodon vorax
Didelphodon sp.3 Marsh 1889 metatherian
Didelphodon vorax Marsh 1889 metatherian
 Theriamorpha - Gypsonictopidae
Gypsonictops illuminatus
Gypsonictops illuminatus Lillegraven 1969 eutherian
 Marsupialia -
Marsupialia indet.3
 Allotheria -
Multituberculata indet.3, ? Multituberculata indet.3
Multituberculata indet.3 Cope 1884 multituberculate
? Multituberculata indet.3 Cope 1884 multituberculate
 Multituberculata - Neoplagiaulacidae
Mesodma thompsoni
Mesodma thompsoni Clemens 1964 multituberculate
 Multituberculata - Cimolodontidae
Cimolodon sp.3
Cimolodon sp.3 Marsh 1889 multituberculate
 Multituberculata - Cimolomyidae
Meniscoessus sp., Meniscoessus robustus3
Meniscoessus sp. Cope 1882 multituberculate
"robustus species group"
Meniscoessus robustus3 Marsh 1889 multituberculate
Reptilia
 Testudinata -
Compsemys victa3
Compsemys victa3 Leidy 1856 turtle
 Testudinata - Baenidae
Baenidae indet.3, Boremys sp.2, Plesiobaena antiqua3
Baenidae indet.3 Cope 1882 turtle
Boremys sp.2 Lambe 1906 turtle
PTRM 9802, neural 7?, from V92048. PTRM 10041, neural fragment; PTRM 9804, right costal 5?; PTRM 9404, fragment
Plesiobaena antiqua3 Lambe 1902 turtle
 Testudines - Kinosternidae
"Kinosternidae indet." = Kinosternoidea3
"Kinosternidae indet." = Kinosternoidea3 Hay 1892 mud turtle
 Testudines - Pantrionychidae
Helopanoplia distincta3
Helopanoplia distincta3 Hay 1908 turtle
 Testudines - Chelydridae
Chelydridae indet.3
Chelydridae indet.3 Swainson 1839 turtle
 Testudines - Trionychidae
Trionychidae indet.3
Trionychidae indet.3 Gray 1825 softshell turtle
 Loricata -
"Leidyosuchus sternbergi" = Borealosuchus sternbergii3
"Leidyosuchus sternbergi" = Borealosuchus sternbergii3 Gilmore 1910 crocodilian
 Crocodylia - Alligatoridae
Brachychampsa montana3
Brachychampsa montana3 Gilmore 1911 crocodilian
 Crocodylia - Gavialidae
Thoracosaurus neocesariensis3
Thoracosaurus neocesariensis3 De Kay 1842 crocodilian
 Ornithischia - Ceratopsidae
Ceratopsidae indet.3
Ceratopsidae indet.3 Marsh 1888 ceratopsid
 Ornithischia -
Thescelosaurus neglectus3
Thescelosaurus neglectus3 Gilmore 1913 ornithopod
 Ornithischia - Hadrosauridae
Hadrosaurinae indet.3
Hadrosaurinae indet.3 Lambe 1918 hadrosaurine
 Theropoda -
Paronychodon lacustris3
Paronychodon lacustris3 Cope 1876 maniraptoran
 Theropoda - Troodontidae
Troodon sp.3
Troodon sp.3 Leidy 1856 maniraptoran
 Theropoda - Dromaeosauridae
Richardoestesia isosceles3, Saurornitholestes sp.3
Richardoestesia isosceles3 Sankey 2001 maniraptoran
Saurornitholestes sp.3 Sues 1978 maniraptoran
Aves
  -
Aves indet.3
Aves indet.3 Linnaeus 1758 bird
 Enantiornithes - Avisauridae
cf. Avisaurus archibaldi3
cf. Avisaurus archibaldi3 Brett-Surman and Paul 1985 bird
Reptilia
 Theropoda - Tyrannosauridae
Tyrannosaurus rex3
Tyrannosaurus rex3 Osborn 1905 tyrant lizard king
 Theropoda - Ornithomimidae
Ornithomimidae indet.3
Ornithomimidae indet.3 Marsh 1890 ornithomimid
 Eosuchia -
Lepidosauria indet.3
Lepidosauria indet.3 Haeckel 1866 lepidosaur
 Choristodera -
Champsosaurus sp.3
Champsosaurus sp.3 Cope 1876 choristodere
Amphibia
 Salientia -
Anura indet.3
 Caudata -
Caudata indet.3
Caudata indet.3 salamander
 Proteida - Batrachosauroididae
Opisthotriton kayi3
Opisthotriton kayi3 Auffenberg 1961 salamander
 Caudata - Urodela
Scapherpetontidae "gen. et sp. nov. 2"1, Scapherpeton tectum3, Habrosaurus dilatus3
Scapherpetontidae "gen. et sp. nov. 2"1 Auffenberg and Goin 1959 salamander
Scapherpeton tectum3 Cope 1876 salamander
Habrosaurus dilatus3 Gilmore 1928 siren
Actinopteri
 Amiiformes - Amiidae
"Kindleia fragosa" = Cyclurus fragosus3, Melvius thomasi3
"Kindleia fragosa" = Cyclurus fragosus3 Jordan 1927 bowfin
Melvius thomasi3 Bryant 1987 bowfin
 Lepisosteiformes - Lepisosteidae
Lepisosteus occidentalis3
Lepisosteus occidentalis3 Leidy 1856 gar
 Teleostei -
Teleostei indet.3
Teleostei indet.3 Müller 1846
 Aspidorhynchiformes - Aspidorhynchidae
Belonostomus longirostris3
Osteichthyes
 Acipenseriformes - Acipenseridae
cf. Acipenser sp.3
cf. Acipenser sp.3 Linnaeus 1758 sturgeon
listed as cf. "Acipenser"
Chondrichthyes
 Rajiformes - Rhinobatidae
Myledaphus bipartitus3
Myledaphus bipartitus3 Cope 1876 guitarfish
 Hybodontiformes - Lonchidiidae
"Lissodus selachos" = Lonchidion selachos3
"Lissodus selachos" = Lonchidion selachos3 Estes 1964 elasmobranch
1Gardner and DeMar 2013; 2Lyson et al. 2011; 3Pearson et al. 2002