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|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Reptilia - Sphagesauridae
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.
|F. V. Iori and I. S. Carvalho 2011||External naris bordered only by the premaxillae; very high pterygoids and ectopterygoids; palatines contacting the maxillae by a cuneiform projection; well-developed and oval antorbital fenestra; premaxilla with four teeth; a small projection of the maxilla visible dorsally; dentary with two diastemata—with corresponding diastemata in the upper jaw, one in the premaxilla and another between the fourth premaxillary and first maxillary alveoli; supraorbital fenestra lance-shaped; long nasals with acute anterior edge anterolaterally touching the projection from the premaxilla; jugal is a straight bar in lateral view; quadrate is dorsoventrally expanded and oriented, quadrate condyle for the articular faces ventrally rather than posteroventrally; frontal is longer than wide and has a slight crest on the midline; dentary with ten teeth each with dorsally directed apex, the first two conical and the smallest in the series, with progressive lateral flattening from the third to the fourth tooth; the fifth through tenth dentary teeth each have a triangular crown, an transversely elliptical cross-section, and a carina on the anterolabial surface.|