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.