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Cherminsaurus

Reptilia - Squamata - Polyglyphanodontidae

Synonymy list
YearName and author
1975Cherminsaurus Sulimski p. 81 figs. 13-14
1983Cherminsaurus Estes
1988Cherminsaurus Carroll
1991Cherminsaurus Gao and Fox
1993Cherminsaurus Alifanov p. 10
1998Cherminsaurus McCord p. 289 fig. 3
2000Cherminsaurus Alifanov
2000Cherminsaurus Gao and Norell p. 73
2014Cherminsaurus 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
genusCherminsaurus

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 pm2+m18/d?18. Cheek teeth large, with diagonally arranged crowns at a mean angle of about 30° to longitudinal jaw axis. Cutting edges of cheek teeth with five or six low, bluntly pointed cusps. Tooth replacement of iguanid type. Tooth implantation subpleurodont. Premaxilla with very short dorsal process. Nasals rectangular in shape, with short medio-anterior ends and wedged suture to frontals. Frontals relatively short, unfused, widened posteriorly and narrowed anteriorly. Parietal long constricted centrally and widened anteriorly. Divergence between posterior processes of parietal at about an angle of 60°. Anterior end of subtriangular prefrontal contacts nasal. Jugal deep, with short, bluntly ended postero-ventral tuber. Jugal laterally connected with postorbital and reaches squamosal. Postfrontal short with proximally forked processes. Postorbital with very short antero-dorsal process. Squamosal short, triangular and more dorsoventrally arranged. Supratemporal probably present. Posterior crest of quadrate prominent, long, but shorter than length of external conch and perpendicularly inward directed. Inner side of quadrate without wing-like process. Supraoccipital with weak sagittal crest. Paroccipital process with slender ends. Vomers wide and short. Low ventral raphae on the midline of vomers present. Palatines long, wide, probably separated by vomers and pterygoids from the midline of palate. Pterygoids strong with outwardly directed posterior processes. Interpterygoid vacuity short, wide in posterior part and very narrow between anterior parts of pterygoids. Suborbital fenestra small, reduced in size, anteroposteriorly elongated. Coronoid process relatively high, with a slightly backwardly directed tip. Retroarticular process wide, long, massively constructed.