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Olsoniformes
Taxonomy
Olsoniformes was named by Anderson et al. (2008). It was considered monophyletic by Schoch (2013).
It was assigned to Dissorophoidea by Anderson et al. (2008); to Dissorophoidea by Reisz et al. (2009), Bourget and Anderson (2011), Schoch (2013), Schoch and Sues (2013); and to Xerodromes by Schoch and Milner (2014).
It was assigned to Dissorophoidea by Anderson et al. (2008); to Dissorophoidea by Reisz et al. (2009), Bourget and Anderson (2011), Schoch (2013), Schoch and Sues (2013); and to Xerodromes by Schoch and Milner (2014).
Synonymy list
Year | Name and author |
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2008 | Olsoniformes Anderson et al. p. 72 |
2009 | Olsoniformes Reisz et al. p. 790 |
2011 | Olsoniformes Bourget and Anderson p. 45 |
2013 | Olsoniformes Schoch |
2013 | Olsoniformes Schoch and Sues p. 438 |
2014 | Olsoniformes Schoch and Milner p. 52 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Unr. †Olsoniformes Anderson et al. 2008
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Fm. †Dissorophidae Boulenger 1902
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Subfm. †Aspidosaurinae Case 1910
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G. †Aspidosaurus Broili 1904
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†Aspidosaurus binasser Berman and Lucas 2003
†Aspidosaurus chiton Broili 1904
†Aspidosaurus glascocki Case 1910
†Aspidosaurus novomexicanus Williston 1911
Invalid names: Alegeinosaurus Case 1911 [synonym], Aspidosaurus aphthitos Cope 1881 [nomen dubium]
G. †Attenosaurus Aldrich and Jones 1930
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†Attenosaurus jonesii Aldrich and Jones 1930
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Invalid names: Hydromeda fimbriata Aldrich and Jones 1930 [synonym]
†Attenosaurus subulensis Aldrich 1930
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Invalid names: Attenosaurus indistinctus Aldrich and Jones 1930 [synonym]
Invalid names: Hydromeda Aldrich and Jones 1930 [synonym]
G. †Cincosaurus Aldrich and Jones 1930
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†Cincosaurus cobbi Aldrich and Jones 1930
†Cincosaurus fisheri Aldrich and Jones 1930
†Cincosaurus jaggerensis Aldrich and Jones 1930
Subfm. †Dissorophinae Boulenger 1902
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G. †Broiliellus Williston 1914
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†Broiliellus arroyoensis DeMar 1967
†Broiliellus brevis Carroll 1964
†Broiliellus olsoni DeMar 1967
†Broiliellus reiszi Holmes et al. 2013
†Broiliellus texensis Williston 1914
Invalid names: Broiliellus hektotopos Berman and Berman 1975 [nomen dubium]
G. †Dissorophus Cope 1895
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†Dissorophus multicinctus Cope 1895
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Invalid names: Dissorophus articulatus Cope 1896 [synonym], Longiscitula houghae DeMar 1966 [synonym], Otocoelus mimeticus Cope 1896 [synonym], Otocoelus testudineus Cope 1896 [synonym]
Invalid names: Longiscitula DeMar 1966 [synonym], Otocoelus Cope 1896 [synonym]
Unr. †Eucacopinae Schoch and Sues 2013
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G. †Cacops Williston 1910
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†Cacops morrisi Reisz et al. 2009
†Cacops woehri Froebisch and Reisz 2012
Invalid names: Trematopsis Olson 1956 [synonym]
G. †Notalacerta Butts 1891
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†Notalacerta magna Butts 1891
†Notalacerta missouriensis Butts 1891
†Notalacerta pentadactyla Gilmore 1927
Subfm. †Platyhistricinae Schoch and Milner 2014
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G. †Stegops Moodie 1909
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†Stegops newberryi Cope 1875
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Invalid names: Ceraterpeton divaricatum Cope 1885 [synonym], Erpetosaurus tuberculatus Moodie 1909 [synonym]
Invalid names: Aspidosaurus peltatus Williston 1911 [nomen dubium], Cacopinae Noble 1931 [empty], Otocoelidae Cope 1896 [synonym], Stegopidae Moodie 1909 [synonym]
Fm. †Trematopidae Williston 1910
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G. †Acheloma Cope 1882
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†Acheloma cryptatheria Osterling Arias et al. 2024
†Acheloma cumminsi Cope 1882
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Invalid names: Acheloma dunni Polley and Reisz 2011 [synonym], Trematops milleri Williston 1909 [synonym]
Invalid names: Trematops Williston 1909 [objective synonym]
Invalid names: Achelomidae Watson 1919 [synonym]
Diagnosis
No diagnoses are available