|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.
|S. E. Evans and M. Manabe 1999||A small choristoderan reptile characterised by the following combination of features: at least 16 cervical vertebrae, of which most or all bear small bicapitate ribs; cylindrical vertebral centra persistently separated from the neural arches except in the neck; caudal vertebrae with deep descending ventral flanges; anterior caudals with tall slender neural spines; interclavicle rhomboid with clavicles meeting at a strong angle in the ventral midline; strong quadrangular coracoids and reduced scapular blades; humerus, forearm and hand relatively short and broad; ilium with narrow vertical blade bearing strong vertical striations; ribs, limb bones and gastralia pachyostotic|