Clade | |
Subclade |
Taxon | |
Taxon |
Thecodontosauridae
|
Nominal Author | Lydekker 1890 |
2nd Nominal Author | |
Taxon Status | INACTIVE |
Comments | |
Potential Synonomy |
Active Phylogenetic Definition | |
Active Definition | |
Shorthand | |
Definitional Author | |
Definition Status | Unknown |
Definition Type | Unknown |
Node-Stem Triplet | Unknown |
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+Taxon | |
-Taxon | |
Datum | |
Taxonomic Content | |
Publication Year |
Unknown Unknown Unknown |
Inactive Taxon Status | |
Rejection Criteria |
no definition redundant |
Critique | The type specimen of Thecodontosaurus antiquus is a dentary (now destroyed). The neotype is another partial dentary (Benton et al. 2000), and a skeleton referred to the same genus is extremely immature (Kermack 1984), rendering its position at the base of Prosauropoda (or Sauropodomorpha) dubious (Benton 2000; Yate, 2003). No definition exists for the family, which may have only a single species in any case. Galton (1990:335) includes the Moroccan species Azhendohsaurus laaroussi with Thecodontosaurus antiquus, although not based on any cladistic information. The material of Azhendohsaurus may pertain to a basal archosauriform (as did the “prosauropod” material reported recently from Madagascar; Flynn et al. 1999). |
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