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Clade
Subclade

Taxon
Taxon
Suchia
Nominal Author
Krebs 1974
2nd Nominal Author
Taxon Status ACTIVE
Comments
Sereno (1991:11) provided a node-based definition for Suchia. Parrish (1993:296) remarked that Suchia is “Crocodylotarsi less Parasuchia”, but did not provide a definition. The active definition is a first-order revision of the only existing definition (Sereno 1991) that includes specifiers for Gracilisuchus and the clades most likely to be basal. In this manner, Suchia captures the concept first articulated by Krebs (1974) and put on a cladogram by Benton and Clark (1988). Ornithosuchidae is not included or excluded by definition. Should ornithosuchid relationships lie within Suchia as defined, they naturally would be regarded as suchians.
Potential Synonomy

Active Phylogenetic Definition
Active Definition
The least inclusive clade containing Aetosaurus ferratus Fraas 1877 and Rauisuchus tiradentes Huene 1942, Prestosuchus chiniquensis Huene 1942, Gracilisuchus stipanicicorum Romer 1972, Crocodylus niloticus (Laurenti 1768).
Shorthand
< Aetosaurus ferratus and Rauisuchus triradentes, Prestosuchus chiniquensis, Gracilisuchus stipanicicorum, Crocodylus niloticus.
Definitional Author
Sereno 2005
Definition Status checked
Definition Type NODE
Node-Stem Triplet NO
Other Triplet Taxa
Specifiers
Specifier(s) A
Aetosaurus ferratus
Specifier(s) B
Rauisuchus triradentes, Prestosuchus chiniquensis, Gracilisuchus stipanicicorum, Crocodylus niloticus
Specifier(s) C
Qualifiers
+Taxon
-Taxon
Datum
Taxonomic Content
Publication Year Unknown
Unknown
Unknown
1991

Inactive Taxon Status
Rejection Criteria
Critique
 

Definitional History #1
Earliest Record
Suchia includes Gracilisuchus stipanicicorum, Aetosauria, Rauisuchia, Poposauridae, Crocodylomorpha, and all descendants of their common ancestor.
Latest Record
Sereno 1991:11
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Gracilisuchus stipanicicorum, Aetosauria, Rauisuchia, Poposauridae, Crocodylomorpha
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