|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Reptilia - Thecodontia
It was synonymized subjectively with Megalosauria by Osborn (1904); it was synonymized subjectively with Pseudosuchia by Haubold (1969); it was reranked as the unranked clade Thecodontia by Gardiner (1982).
It was assigned to Tocosauria by Haeckel (1866); to Reptilia by Owen (1861) and Kuhn (1946); to Archosauromorpha by Huene (1954); to Archosauria by Olson (1966); to Archosauria by Haughton and Brink (1954), Kuhn (1964), Bakker and Galton (1974) and Thulborn (1975); to Euamniota by Gardiner (1982); and to Archosauria by Carroll (1988).
|Year||Name and author|
|1861||Thecodontia Owen p. 275|
|1866||Thecodonta Haeckel p. CXXXIV|
|1946||Thecodontia Kuhn p. 63|
|1947||Ocoyuntaia arquata Rusconi pp. 1-2 fig. 1|
|1954||Thecodontia Haughton and Brink p. 4|
|1954||Thecodontia Huene p. 42|
|1958||Seemannia palaeotriadica Huene|
|1958||Seemannia Huene p. 112 fig. 1|
|1964||Thecodontia Kuhn p. 312|
|1964||Shansisuchus heiyuekouensis Young|
|1966||Thecodontia Olson p. 301|
|1967||Crenelosaurus nigrosilvanus Ortlam|
|1974||Thecodontia Bakker and Galton p. 171|
|1975||Thecodontia Thulborn p. 267|
|1982||Thecodontia Gardiner p. 228|
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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.
|R. Owen 1861||Vertebral bodies biconcave: ribs of the trunk long and bent, the anterior ones with a bifurcate head: sacrum of three vertebrae: limbs ambulatory, femur with a third trochanter. Teeth with the crown more or less compressed, pointed, with trenchant and finely serrate margins: implanted in distinct sockets.|