|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
It was synonymized subjectively with Captorhinidae by Gregory et al. (1956).
It was assigned to Reptilia by Cope (1883); to Theriodontia by Zittel (1890); to Cotylosauria by Cope (1896) and Osborn (1904); and to Pareiasauria by Case (1911).
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.