Clade | |
Subclade |
Taxon | |
Taxon |
Aetosauria
|
Nominal Author | Nicholson and Lydekker 1889 |
2nd Nominal Author | |
Taxon Status | ACTIVE |
Comments | First defined by Heckert and Lucas (2000), the active definition is a first-order revision that uses the nominotypical taxon Aetosaurus ferratus as an internal specifier, rather than Desmatosuchus haplocerus, and uses nested species from several other major clades as external specifiers (Rauisuchus tiradentes, Prestosuchus chiniquensis, Poposaurus gracilis, Crocodylus niloticus). In this manner the contents of the clade are stable realtive to other clades but newfound basal aetosaurians may be incorporated. |
Potential Synonomy | Aethosauri (Jaekel 1911, spelling variant) |
Active Phylogenetic Definition | |
Active Definition |
The most inclusive clade containing Aetosaurus ferratus Fraas 1877 but not Prestosuchus chiniquensis Huene 1942, Rauisuchus tiradentes Huene 1942, Poposaurus gracilis Mehl 1915, Crocodylus niloticus (Laurenti 1768).
|
Shorthand |
> Aetosaurus ferratus but not Prestosuchus chiniquensis, Rauisuchus triradentes, Poposaurus gracilis, Crocodylus niloticus. |
Definitional Author |
Sereno 2005 |
Definition Status | checked |
Definition Type | STEM |
Node-Stem Triplet | NO |
Other Triplet Taxa | |
Specifiers | |
Specifier(s) A |
Aetosaurus ferratus |
Specifier(s) B | |
Specifier(s) C |
Prestosuchus chiniquensis, Rauisuchus triradentes, Poposaurus gracilis, Crocodylus niloticus
|
Qualifiers | |
+Taxon | |
-Taxon | |
Datum | |
Taxonomic Content | |
Publication Year |
Unknown Unknown Unknown 2000 |
Inactive Taxon Status | |
Rejection Criteria | |
Critique | |
Definitional History #1 | |
Earliest Record | All crurotarsans more closely related to Desmatosuchus than the immediate sister group, recognizing that the sister group may be rauisuchians, prestosuchians or another suchian taxon. |
Latest Record | Heckert and Lucas 2000:1544 |
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Desmatosuchus, rauisuchians, prestosuchians, “another suchian taxon” |
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