Cerapoda
Cerapoda is a clade of the dinosaur order Ornithischia.Classification
Cerapoda is divided into two groups: Ornithopoda and Marginocephalia. The latter group includes the Pachycephalosauria and Ceratopsia. The following taxonomy follows Richard J. Butler, Paul Upchurch and David B. Norman, 2008 unless otherwise noted.
Cerapoda was first named by Sereno in 1986 and defined by him as "Parasaurolophus walkeri Parks, 1922, Triceratops horridus Marsh, 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.