Classification of the family Obolidae
Fm. †Obolidae King 1846
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Subfm. †Elliptoglossinae Popov and Holmer 1994
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G. †Elliptoglossa Cooper 1956
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†Elliptoglossa ovalis Bassler 1919
†Elliptoglossa rotundata Cooper 1956
†Elliptoglossa sylvanica Cooper 1956
†Elliptoglossa vulgaris Hansen and Holmer 2011
G. †Lingulops Hall 1871
Subfm. †Glossellinae Cooper 1956
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G. †Anx
G. †Casquella
G. †Eoglossa Wang et al. 2014
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†Eoglossa chengjiangensis Jin et al. 1993
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Invalid names: Obolus chinensis Walcott and Mansuy 1912 [synonym]
G. †Glyptoglossella Cooper 1960
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†Glyptoglossella cavellosa Cooper 1956
Invalid names: Glyptoglossa Cooper 1956 [replaced]
G. †Lachrymula Graham 1970
G. †Pachyglossella Cooper 1960
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†Pachyglossella dorsiconvexa Cooper 1956
Invalid names: Pachyglossa Cooper 1956 [replaced]
G. †Plectoglossa Cooper 1956
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†Plectoglossa davidsoni Barrande 1879
†Plectoglossa oklahomensis Cooper 1956
G. †Rafanoglossella Havlicek 1998
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†Rafanoglossella deleta Barrande 1879
†Rafanoglossella generosa Havlicek 1998
†Rafanoglossella leiskowiensis Barrande 1879
†Rafanoglossella siliqua Havlicek 1994
G. †Spondyglossella
G. †Lingulella Salter 1866
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†Lingulella agaue Mergl and Kordule 2008
†Lingulella alata Holmer 1989
†Lingulella amabilis Reed 1917
†Lingulella ampla Owen 1852
†Lingulella angustior Reed 1917
†Lingulella brainerdi Raymond 1902
†Lingulella buttsi Walcott 1908
†Lingulella columba Raymond 1905
†Lingulella cuneata Conrad 1839
†Lingulella davisi McCoy 1846
†Lingulella davisii McCoy 1851
†Lingulella desiderata Walcott 1898
†Lingulella eucharis Resser 1939
†Lingulella ferruginea Salter 1867
†Lingulella fuchsi Redlich 1899
†Lingulella holyokensis Lochman 1938
†Lingulella huronensis Billings 1859
†Lingulella ibicus Walcott 1924
†Lingulella idahoensis Resser 1938
†Lingulella incongrua Barrande 1879
†Lingulella manticula White 1874
†Lingulella mediostriata Reed 1917
†Lingulella morsensis Winchell 1880
†Lingulella narrawayi Wilson 1946
†Lingulella nepos Walcott 1924
†Lingulella obtusa Hall 1847
†Lingulella ovata M'Coy 1846
†Lingulella prima Billings 1856
†Lingulella prolixa Sinclair 1945
†Lingulella proveedorensis Cooper et al. 1952
†Lingulella quaestor Reed 1917
†Lingulella selwyni Mathew 1896
†Lingulella texana Walcott 1908
†Obolus (Lingulella) atavus Matthew 1899
†Obolus (Lingulella) canius Walcott 1902
†Obolus (Lingulella) chinensis Walcott 1905
†Obolus (Lingulella) collicia Matthew 1899
†Obolus (Lingulella) concinnus Matthew 1900
†Obolus (Lingulella) damesi Walcott 1905
†Obolus (Lingulella) isse Walcott 1905
†Obolus (Lingulella) lens Matthew 1900
†Obolus (Lingulella) orus Walcott 1905
†Obolus (Lingulella) pelias Walcott 1905
†Obolus (Lingulella) quadrilateralis Walcott 1905
†Obolus (Lingulella) schmalensei Walcott 1902
†Obolus (Lingulella) septalis Walcott 1905
†Obolus (Lingulella) spatulus Walcott 1902
†Obolus (Lingulella) upis Walcott 1905
†Obolus (Lingulella) wanniecki Redlich 1899
†Obolus (Lingulella) welleri Walcott 1902
Subfm. †Lingulellinae Schuchert 1893
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G. †Rowellella Wright 1963
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†Rowellella distincta Bednarczyk and Biernat 1978
†Rowellella holenensis Holmer 1989
†Rowellella lamellosa Popov 1976
†Rowellella margarita Krause and Rowell 1975
†Rowellella minuta Wright 1963
†Rowellella multilamellata Bednarczyk 1986
†Rowellella parallela Bednarczyk 1986
†Rowellella rugosa Goryansky 1969
Subfm. †Obolinae King 1846
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G. †Aksarinaia Koneva 1992
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†Aksarinaia subtilicrusta Percival and Kruse 2014
†Aksarinaia triquetra Koneva 1992
G. †Anomaloglossa
G. †Barbatulella
G. †Dicellomus
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†Dicellomus appalachia Walcott 1905
†Dicellomus nanus Meek and Hayden 1862
†Dicellomus parvus Walcott 1905
†Dicellomus pectenoides Whitfield 1875
†Dicellomus politus Hall 1861
†Dicellomus prolificus Walcott 1908
G. †Ectenoglossa Sinclair 1945
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†Ectenoglossa lesueuri Rouault 1850
†Ectenoglossa lyelli Billings 1859
†Ectenoglossa mantelli Billings 1859
†Ectenoglossa nympha Billings 1865
†Ectenoglossa oviforma Hansen and Holmer 2011
G. †Gorjanskya Tenjakova 1980
G. †Leontiella
G. †Libecoviella Mergl 1997
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†Libecoviella arachne Barrande 1879
†Libecoviella brlohicensis Mergl 1997
†Libecoviella divaricata Brock and Holmer 2004
†Libecoviella ovata Havlicek 1982
G. †Lingulepis Hall 1863
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†Lingulella (Lingulepis) acuminata Conrad 1839
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Invalid names: Lingulepis antiqua Emmons 1842 [synonym]
†Lingulella (Lingulepis) acuminata sequens Walcott 1908
†Lingulella (Lingulepis) rowei Walcott 1905
†Lingulepis acutangulus Roemer 1849
†Lingulepis maera Hall and Whitfield 1877
†Lingulepis nabis Walcott 1924
†Lingulepis pinnaformis Owen 1852
†Lingulepis tenuilineata Poulsen 1937
†Obolus (Lingulepis) eros Walcott 1905
G. †Lingulobolus
G. †Obolus Eichwald 1829
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Subg. †Obolus (Broggeria) Walcott 1902
†Obolus acadica Walcott 1905
†Obolus apollinis Eichwald 1829
†Obolus eichwaldi Mickwitz 1896
†Obolus ion Walcott 1924
†Obolus ismene Walcott 1905
†Obolus matinalis Hall 1863
†Obolus mcconnelli Walcott 1889
†Obolus membranaceous Walcott 1908
†Obolus minimus Walcott 1905
†Obolus nundina Walcott 1905
†Obolus obscurus Walcott 1905
†Obolus parvus Walcott 1908
†Obolus pheres Walcott 1905
†Obolus prindlei Walcott 1898
†Obolus ruchini Khazanovich et al. 1984
†Obolus shensiensis Walcott 1905
†Obolus smithi Walcott 1908
†Obolus tetonensis ninus Walcott 1905
†Obolus virginiensis Cooper 1956
†Obolus wortheni Walcott 1908
G. †Oepikites Khazanovitch and Popov 1984
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†Oepikites acutes Pelman 1978
†Oepikites elongatus Popov and Khazanovitch 1984
†Oepikites fragilis Popov and Khazanovitch 1984
†Oepikites kitatiensis Aksarina 1978
†Oepikites macilentus Khazanovitch and Popov 1894
†Oepikites obtusus Mickwitz 1896
†Oepikites triquetrus Popov and Khazanovitch 1984
G. †Palaeobolus
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†Palaeobolus liantuoensis Zeng 1987
†Palaeobolus margaritae Saito 1936
Invalid names: Obolopsis Saito 1936 [synonym]
G. †Palaeoglossa Cockerell 1911
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†Lingula (Palaeoglossa) hurlbuti Winchell 1880
†Lingula (Palaeoglossa) perovata Hall 1852
†Lingula (Palaeoglossa) trentonensis Conrad 1842
†Palaeoglossa attenuata Sowerby 1839
†Palaeoglossa belli Billings 1859
†Palaeoglossa briseis Billings 1865
†Palaeoglossa friabilis Sinclair 1945
†Palaeoglossa maccullochi Reed 1917
†Palaeoglossa minima Benedetto 2015
Invalid names: Glossina Phillips 1848 [replaced]
G. †Palaeoschmidtites Koneva 1979
G. †Rafanoglossa Havlicek 1980
G. †Schmidtites Schuchert and LeVene 1929
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†Schmidtites celatus Volborth 1869
Invalid names: Schmidtia Volborth 1869 [replaced]
G. †Sinoglossa Mei 1993
G. †Spinilingula Cooper 1956
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†Spinilingula bracteata Krause and Rowell 1975
†Spinilingula intralamellata Cooper 1956
†Spinilingula radiolamellosa Holmer 1989
G. †Squamilingulella Xu 1978
G. †Trigonoglossa
G. †Ungula Pander 1830
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†Ungula convexa Pander 1830
†Ungula ingrica Eichwald 1829
†Ungula inornata Mickwitz 1896
G. †Westonia Walcott 1901
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†Obolus (Westonia) alandensis Walcott 1905
†Obolus (Westonia) baltica Walcott 1905
†Obolus (Westonia) blackwelderi Walcott 1905
†Obolus (Westonia) dartoni Walcott 1908
†Obolus (Westonia) ella Hall and Whitfield 1877
†Obolus (Westonia) ella onaquiensis Walcott 1908
†Obolus (Westonia) elongatus Walcott 1908
†Obolus (Westonia) finlandensis Walcott 1902
†Obolus (Westonia) iphis Walcott 1905
†Obolus (Westonia) notchensis Walcott 1908
†Obolus (Westonia) themis Walcott 1905
†Obolus (Westonia) wasatchensis Walcott 1908
†Obolus (Westonia) wimani Walcott 1905
†Westonia anrakhaica Nikitina et al. 2006
†Westonia bohemica Koliha 1921
†Westonia clathrata Walcott and Schuchert 1893
†Westonia ella Walcott 1912
†Westonia gubaiensis Luo et al. 2008
†Westonia nyapungensis Kruse 1990
†Westonia superba Cooper 1956
G. †Westonisca
G. †Prastavia Mergl 2001