|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Reptilia - Sauropterygia
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.
|O. Rieppel et al. 2002||Pistosaur with maxillary tooth row extending backwards beyond posterior margin of orbit to level below anterior corner of upper temporal fossa; frontals paired; frontal entering anteromedial margin of upper temporal fossa without forming descending flange; para-basisphenoid with ventrally projecting sagittal crest; posterior palatine vacuities present (convergent in Plesiosaurus); epipterygoid broad dorsally; dorsal neural spines terminating in distinct “saw-cut” rugosities, middle dorsal vertebrae with double facets of unfinished bone near posterior end of neural spine; posteriorly slanted transverse processes with round rib articular facets.|