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|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Reptilia - Squamata - Polyglyphanodontidae
It was assigned to Teiidae by Carroll (1988), Gao and Fox (1991) and Alifanov (1993); to Macrocephalosauridae by Sulimski (1975), Alifanov (2000) and Alifanov (2000); and to Polyglyphanodontinae by Estes (1983) and Xu et al. (2014).
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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.
|A. Sulimski 1975||Dental 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.