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Younginiformes

Reptilia

Taxonomy
Younginiformes was named by Romer (1933). It was considered monophyletic by Laurin (1991) and paraphyletic by Bickelmann et al. (2009).

It was reranked as the suborder Younginiformes by Haughton and Brink (1954) and Currie (1982); it was reranked as the unranked clade Younginiformes by Laurin (1991), Laurin and Reisz (1995) and Bickelmann et al. (2009).

It was assigned to Eosuchia by Haughton and Brink (1954); to Eosuchia by Currie (1982); to Lepidosauromorpha by Benton (1985); to Lepidosauromorpha by Gauthier et al. (1989); to Diapsida by Laurin and Reisz (1995); and to Neodiapsida by Laurin (1991) and Bickelmann et al. (2009).

Synonymy list
YearName and author
1933Younginiformes Romer
1954Younginiformes Haughton and Brink p. 3
1982Younginiformes Currie
1985Younginiformes Benton p. 154
1989Younginiformes Gauthier et al. p. 344
1991Younginiformes Laurin pp. 83, 87 fig. 11
1995Younginiformes Laurin and Reisz pp. 171, 172
2009Younginiformes Bickelmann et al. p. 652

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
RankNameAuthor
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Eosuchia()
Neodiapsida
Younginiformes(Romer 1933)
Younginiformes(Romer 1933)

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. †Younginiformes Romer 1933
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G. †Acerosodontosaurus Currie 1980
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Superfm. †Younginoidea Currie 1982
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Fm. †Tangasauridae Haughton 1924
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Subfm. †Kenyasaurinae Currie 1982
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G. †Kenyasaurus Harris and Carroll 1977
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Kenyasaurus mariakaniensis Harris and Carroll 1977
Subfm. †Tangasaurinae Piveteau 1926
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G. †Hovasaurus Piveteau 1926
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Hovasaurus boulei Piveteau 1926
G. †Tangasaurus Haughton 1924
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Tangasaurus mennelli Haughton 1924
Fm. †Younginidae Broom 1914
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G. †Thadeosaurus Carroll 1981
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Thadeosaurus colcanapi Carroll 1981
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Invalid names: Broomia madagascariensis Piveteau 1926 [synonym]
G. †Youngina Broom 1914
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Youngina capensis Broom 1914
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Invalid names: Acanthotoposaurus bremneri Evans and van den Heever 1987 [synonym], Youngoides minor Broom and Robinson 1948 [synonym], Youngoides romeri Olson and Broom 1937 [synonym], Youngopsis kitchingi Broom 1937 [synonym], Youngopsis rubidgei Broom and Robinson 1948 [synonym]
Invalid names: Acanthotoposaurus Evans and van den Heever 1987 [synonym], Youngoides Olson and Broom 1937 [synonym], Youngopsis Broom 1937 [synonym]
Diagnosis
No diagnoses are available