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Cerapoda ("ceratopsians and ornithopods") is a clade of the dinosaur order Ornithischia. ==Classification== Cerapoda is divided into two groups: Ornithopoda ("bird-foot") and Marginocephalia ("fringed heads"). The later 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 horridus'' Marsh, 1889, their most recent common ancestor and all descendents".〔 The cladogram below follows a 2011 analysis by paleontologists Richard J. Butler, Jin Liyong, Chen Jun and Pascal Godefroit.〔 }} In addition, there are some species which are difficult to classify in either the marginocephalian or ornithopod lineages, such as ''Albalophosaurus yamaguchiorum'', which is considered Cerapoda incertae sedis (uncertain placement). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「cerapoda」の詳細全文を読む スポンサード リンク
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