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Sphenacodontia

Synonymy list
YearName and author
1940Sphenacodontia Romer and Price pp. 18, 260
1946Sphenacodontia Kuhn p. 56
1953Sphenacodontia Olson and Beerbower p. 406
1954Sphenacodontia Haughton and Brink p. 5
1954Sphenacodontia Huene p. 28
1965Sphenacodontia Lewis and Vaughn p. C27
1966Sphenacodontia Kuhn p. 120
1966Sphenacodontia Olson p. 302
1971Sphenacodontia Haubold p. 34
1977Sphenacodontia Currie p. 929
1981Sphenacodontia Langston and Reisz p. 74
2002Sphenacodontia Kissel and Lehman p. 536
2004Sphenacodontia Kissel and Reisz
2011Sphenacodontia Fröbisch et al.
2015Sphenacodontia Spindler
2015Sphenacodontia Spindler et al. p. 18

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Life
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
RankNameAuthor
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
subclassSynapsida
suborderEupelycosauria
SphenacomorphaIvakhnenko 2003
suborderSphenacodontia
suborderSphenacodontia

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.

Subor. †Sphenacodontia Romer and Price 1940
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G. †Cutleria Lewis and Vaughn 1965
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Cutleria wilmarthi Lewis and Vaughn 1965
Fm. †Homodontosauridae Kuhn 1961
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G. †Homodontosaurus Broom 1949
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G. †Ianthodon Kissel and Reisz 2004
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Ianthodon schultzei Kissel and Reisz 2004
G. †Palaeohatteria Credner 1888
G. †Pantelosaurus v. Huene 1925
G. †Shashajaia Huttenlocker et al. 2021
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Shashajaia bermani Huttenlocker et al. 2021
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Fm. †Sphenacodontidae Marsh 1878
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G. †Cryptovenator Fröbisch et al. 2011
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Cryptovenator hirschbergeri Fröbisch et al. 2011
G. †Ctenorhachis Hook and Hotton 1991
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Ctenorhachis jacksoni Hook and Hotton 1991
Subfm. †Secodontosaurinae Romer and Price 1940
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G. †Secodontosaurus Romer 1936
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Invalid names: Dimetrodon longiramus Case 1907 [synonym], Secodontosaurus willistoni Romer 1936 [synonym]
Subfm. †Sphenacodontinae Romer 1936
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G. †Bathygnathus Leidy 1853
G. †Ctenospondylus Romer 1936
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Ctenospondylus casei Romer 1936
G. †Dimetrodon Cope 1878
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Dimetrodon angelensis Olson 1962
Dimetrodon booneorum Romer 1937
Dimetrodon borealis Leidy 1853
Dimetrodon grandis Case 1907
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Invalid names: Dimetrodon maximus Romer 1936 [synonym]
Dimetrodon limbatus Cope 1877
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Invalid names: Dimetrodon incisivus Cope 1878 [synonym], Dimetrodon rectiformis Cope 1878 [synonym], Dimetrodon semiradicatus Cope 1881 [synonym]
Dimetrodon loomisi Romer 1937
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Invalid names: Dimetrodon platycentrus Case 1907 [synonym]
Dimetrodon milleri Romer 1937
Dimetrodon natalis Cope 1878
Dimetrodon occidentalis Berman 1977
Dimetrodon teutonis Berman et al. 2001
G. †Macromerion Fritsch 1879
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G. †Neosaurus Nopsca 1923
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Neosaurus cynodus Gervais 1869
Invalid names: Geosaurus Gervais 1869 [replaced]
G. †Sphenacodon Marsh 1878
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Sphenacodon britannicus von Huene 1908
Sphenacodon ferocior Romer 1937
Sphenacodon ferox Marsh 1878
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Invalid names: Scoliomus puercensis Williston and Case 1913 [synonym]
Invalid names: Oxyodon von Huene 1908 [replaced]
Invalid names: Dimetrodon kempae Romer 1937 [nomen dubium], Eosyodon Olson 1962 [nomen dubium], Eosyodon hudsoni Olson 1962 [nomen dubium], Palaeohatteriidae Baur 1889 [synonym], Pantelosauridae Huene 1925 [synonym], Varanopsinae Romer 1936 [empty]
Fm. †Tappenosauridae Olson and Beerbower 1953
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G. †Tappenosaurus Olson and Beerbower 1953
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Tappenosaurus magnus Olson and Beerbower 1953
Invalid names: Anningiidae Broom 1927 [empty], Haptodontinae Romer and Price 1940 [empty]
Diagnosis
No diagnoses are available