pachycephalosauria造句

• However, exact cladistic analyses by Paul Sereno have resulted in a position in the Pachycephalosauria.
• Many Pachycephalosauria and most members of the Dinocephalia clade of therapsids had thickened skull bones, probably used in head-butting contests.
• "' Pachycephalosauria "'(; } } from Greek ???????????????? for'thick headed lizards') is a clade of ornithischian dinosaurs.
• There was a trend towards increasing body size within many dinosaur clades, including the Thyreophora, Ornithopoda, Pachycephalosauria, Ceratopsia, Sauropomorpha, and basal Theropoda.
• Amongst her many publications are contributions to three chapters of the 2nd edition of the highly respected The Dinosauria : the chapters on the Therizinosauroidea, the Ankylosauria and on the Pachycephalosauria.
• For this reason, reconstructions usually depict " Prenocephale " as sharing the basic body plan common to all of the other Pachycephalosauria : a stout body with a short, thick neck, short forelimbs and tall hind legs.
• But paleontologists Richard J . Butler and Robert M . Sullivan nonetheless view the species as being Marginocephalia " incertae sedis ", rejecting the presumed synapomorphies with the Pachycephalosauria as incorrect identifications or lacking cogency because of a possible presence in ceratopsian groups.