|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
It was synonymized subjectively with Anomodontia by Osborn (1904); it was reranked as the superorder Theromorpha by Nopcsa (1923), Nopcsa (1928) and Roxo (1937); it was reranked as the subclass Theromorpha by Gadow (1898) and Kuhn (1966).
It was assigned to Monozygocrotapha by Nopcsa (1928); to Synapsida by Roxo (1937); and to Reptilia by Zittel (1890), Gadow (1898), Nopcsa (1923), Swinton (1934), Kuhn (1946) and Kuhn (1966).
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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.