Peteinosaurus sp. (MCSNB 3359 - Wild 1978) Norian, Late Triassic, ~205 mya was considered headless, but a few pieces enable a partial reconstruction. Derived from a sister to Dimorphodon, Peteinosaurus phylogenetically preceded Carniadactylus at the base of the Protoanurognathidae, a clade of pterosaurs with anurognathid traits but are not typically considered anurognathids.
Smaller than and distinct from Dimorphodon, the skull of Peteinosaurus had a more robust jugal and quadrate.
The cervical series was considerably shortened. Caudal vertebrae 20-25 were abruptly reduced to grains and the otherwise robust caudal series was just longer than the snout-vent length. This marked the beginning of caudal reduction in this clade.
The sternal complex was shorter than in Preondactylus, but still no deeper than the third dorsal rib. The forelimb was more robust with a relatively larger manus and shorter wing.
The hindlimbs were more robust. Metatarsals II-IV were subequal and just slightly longer than mt I.
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