|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Reptilia - Sauropterygia - Nothosauridae
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 and R. Wild 1996||Frontals fused; parietal skull table strongly constricted; maxillary fangs present; occipital crest of parietal and squamosal well developed; posttemporal fenestrae rudimentary or closed; pterygoid-ectopterygoid flange reduced or absent; medioventral flange extends to posterior tip of quadrate ramus of pterygoid|