|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
It was reranked as the superfamily Seymouriamorpha by Kuhn (1946); it was reranked as the order Seymouriamorpha by Huene (1954); it was reranked as the unranked clade Seymouriamorpha by Martens et al. (2005).
It was assigned to Cotylosauria by Roxo (1937); to Batrachosauria by Efremov (1946); to Diadecta by Olson (1947); to Reptiliomorphoidea by Huene (1954); to Cotylosauria by Kuhn (1946) and Lewis and Vaughn (1965); to Amphibia by Thurmond and Jones (1981); to Anthracosauria by Carroll et al. (1972) and Carroll (1988); to Batrachosauria by Gauthier et al. (1988) and Gauthier et al. (1989); and to Amphibia by Martens et al. (2005).
|Year||Name and author|
|1937||Seymouria Roxo p. 42|
|1946||Seymouriamorpha Kuhn p. 55|
|1947||Seymouriamorpha Olson pp. 44, 45|
|1954||Seymouriamorpha Huene p. 18|
|1965||Seymouriamorpha Lewis and Vaughn p. C12|
|1972||Seymouriamorpha Carroll et al. p. 21|
|1981||Seymouriamorpha Thurmond and Jones p. 113|
|1988||Seymouriamorpha Gauthier et al. p. 139 fig. 4.3|
|1989||Seymouriamorpha Gauthier et al. p. 340|
|2005||Seymouriamorpha Martens et al.|
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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.