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Clade
Subclade

Taxon
Taxon
Cerapoda
Nominal Author
Sereno 1986
2nd Nominal Author
Taxon Status INACTIVE
Comments
Potential Synonomy
Neornithischia

Active Phylogenetic Definition
Active Definition
Shorthand
Definitional Author
Definition Status Unknown
Definition Type Unknown
Node-Stem Triplet Unknown
Other Triplet Taxa
Specifiers
Specifier(s) A
Specifier(s) B
Specifier(s) C
Qualifiers
+Taxon
-Taxon
Datum
Taxonomic Content
Publication Year Unknown
Unknown
Unknown

Inactive Taxon Status
Rejection Criteria junior synonym
other
Critique

This taxon was coined by Sereno (1986) but abandoned by Sereno (1997, 1998) in favor of the taxon Neornithischia, which was coined by Cooper (1985) one year prior to Cerapoda. Sereno (1997, 1998, 1999) adopted Neornithischia and gave it a stem-based defintion, which is revised in this compilation. Weishampel (2004) was the first to formally define Cerapoda by using the same definition that Sereno (1998) had given to Neornithischia six years prior.

While it is true that Cerapoda and Neornithischia did not have identical taxonomic content when they were independently coined, this compilation recognizes Neornithischia as it was preferentially adopted by one of the authors of the pair of taxa (Sereno 1997, 1998. 1999) and defined phylogentically years in advance of the other. And although etymology does not trump date of publication or other factors in deciding preferential use, that for Cerapoda is unusual to say the least. Cerapoda was coined as a combination of stems from two of the major included clades (Ceratopsia, Ornithopoda). In combination they are nonsensical (”horn foot”), as opposed to the meaning, however abstract, of all other higher taxa within Dinosauria. For these reasons, collectively, Neornithischia is adopted in this compilation and Cerapoda (a taxon that I regret having coined) is regarded as an inactive taxon.

 

Definitional History #1
Earliest Record
Those genasaurs more closely related to Triceratops than to Ankylosaurus.
Latest Record
Weishampel 2004:323
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Triceratops, Ankylosaurus
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