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Darchansaurus

Reptilia - Squamata - Polyglyphanodontidae

Synonymy list
YearName and author
1975Darchansaurus Sulimski p. 70 fig. 12
1983Darchansaurus Estes
1988Darchansaurus Carroll
1991Darchansaurus Gao and Fox
1993Darchansaurus Alifanov p. 10
2000Darchansaurus Alifanov
2014Darchansaurus Xu et al.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
RankNameAuthor
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Lepidosauromorpha(Benton 1983)
superorderLepidosauria()
orderSquamata
Episquamata
ToxicoferaVidal and Hedges 2005
PolyglyphanodontiaAlifanov 2000
familyPolyglyphanodontidaeGilmore 1942
genusDarchansaurus

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.

Diagnosis
ReferenceDiagnosis
A. Sulimski 1975Dental formula pm?4+m28/d30. Dentition pleurodont, weakly heterodont. Iguanid tooth replacement. Skull short, wide, massive and strongly constructed, with slanting naso-prefrontal region. Skull length about 56 mm, width 40 mm. Nasals short, roughly triangular.broad anteriorly. Frontals anteriorly widened, bent at an angle inrelation to the fronto-parietal surface, posteriorly elongated, with distinct orbital notches. Fronto-parietal suture with a medial anteriorly directed prominence. Parietal foramen situated in the parietal. Parietal wide, short. Posterior processes forked at an angle of 105-110°. Maxilla
shortened but high, slightly inclined medially ventral. Jugals widely separated, with strong postero-ventral tubers bent outwards. Orbits large, oval. Postfrontal short, wide, without parietal process. Postorbital strong anteriorly, shortened, posteriorly widened. Squamosal roughly triangular, widely joining the jugal. Supraoccipital with a distinct sagittal crest. Paroccipital process dorsoventrally very wide. Supratemporal fossa small, roughly triangular. Quadrate with a narrow external conch and a strong posterior crest. Vomers long and wide, with distinct ventral raphae. Palate short, wide and high. Ectopterygoid strongly reduced. Palatines wide and short. Basipterygoid processes short, with wide condyles. The lower jaw short, massive, with a distinct angular outline. Retroarticular process short, wide, posteriorly pointed. Splenial posteriorly wide, anteriorly sharply pointed. Coronoid process rather low and straight.