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Protoceratops were small ceratopsians, up to 2–2.5 m (6.6–8.2 ft) long and around 62–104 kg (137–229 lb) in body mass. While adults were largely quadrupedal, juveniles had the capacity to walk around bipedally if necessary. They were characterized by a proportionally large skull, short and stiff neck, and neck frill.
The skeleton of Protoceratops juveniles indicates that protoceratopsids were able to employ facultative bipedalism when young and became obligate quadrupeds in adulthood. However, adults still had proportions allowing the capacity to occasionally stand on two legs.
Fighting Dinosaurs. The Fighting Dinosaurs is a fossil specimen which was found in the Late Cretaceous Djadokhta Formation of Mongolia in 1971. It preserves a Protoceratops andrewsi and Velociraptor mongoliensis trapped in combat about 80 million years ago and provides direct evidence of predatory behavior in non- avian dinosaurs.
In 2019 a partial skeleton (specimen KID 196) of Bagaceratops was described by Bitnara Kim and colleagues, who noted no significant differences between the skeleton of Protoceratops and the former, with the exception of the anatomy of the skull and the shape and location of the clavicles. This specimen was discovered in 2007 also from the ...
Protoceratops gained notoriety as the supposed parent of the first fossil dinosaur eggs known to science. [5] One of these supposed Protoceratops nests preserved the skeleton of a new kind of theropod dinosaur, Oviraptor. It was thought to have been preserved after being killed in the act of raiding the Protoceratops nest.
The skeleton preserves, among other elements, numerous elements of the skull, a nearly complete left front- and hindlimb, parts of the pelvis and most of the vertebral column. The specimen was excavated from Triebold Paleontology Incorporated ’s “12-020” site, a quarry in the Upper Cretaceous Judith River Formation in Fergus County, Montana.
Species: † Z. christopheri. Binomial name. †Zuniceratops christopheri. Wolfe & Kirkland, 1998. Zuniceratops ('Zuni-horned face') is a genus of ceratopsian dinosaurs that lived during the Turonian stage of the Late Cretaceous in what is now New Mexico, United States. Only a single species is known, Zuniceratops christopheri.
Torosauridae Nopcsa, 1915. Ceratopsidae (sometimes spelled Ceratopidae) is a family of ceratopsian dinosaurs including Triceratops, Centrosaurus, and Styracosaurus. All known species were quadrupedal herbivores from the Upper Cretaceous. All but one species are known from western North America, which formed the island continent of Laramidia ...