|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
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.
|R. R. Schoch 2011||Autapomorphy: Cultriform process with anterior broad ridge merging into a sharp crest posteriorly. Homoplastic or plesiomorphic characters: Snout outline narrow, transvomerine tooth count low, choana elongate and oval, but not slit-like.|