Cerapoda

 Cerapoda ("ceratopsians" and "ornithopods") is a clade of the dinosaur order Ornithischia, that includes ceratopsians, ornithopods and pachycephalosaurs.

Cerapoda Temporal range: Middle Jurassic–Late Cretaceous, 163–66 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Skulls of cerapod dinosaurs
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Order:	†Ornithischia
Clade:	†Genasauria
Clade:	†Neornithischia
Clade:	†Cerapoda Sereno, 1986
Subgroups
†Marginocephalia †Ornithopoda

Classification

Cerapoda is divided into two groups: Ornithopoda ("bird-foot") and Marginocephalia ("fringed heads"). The latter group includes the Pachycephalosauria("thick-headed lizards") and Ceratopsia("horned faces"). The following taxonomy follows Richard J. Butler, Paul Upchurch and David B. Norman, 2008 (and Butler et al., 2011) unless otherwise noted.

Cerapoda was first named by Sereno in 1986 and defined by him as "Parasaurolophus walkeri Parks, 1922, Triceratops horridusMarsh, 1889, their most recent common ancestor and all descendants". The cladogram below follows a 2011 analysis by paleontologists Richard J. Butler, Jin Liyong, Chen Jun and Pascal Godefroit.

Cerapoda	Ornithopoda    Marginocephalia   Pachycephalosauria      Ceratopsia

This article uses material from the Wikipedia article  Metasyntactic variable, which is released under the  Creative Commons Attribution-ShareAlike 3.0 Unported License.