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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.
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 skull with large sclerotic rings. Based on the size of its sclerotic ring, Protoceratops had an unusually large eye among protoceratopsids. In birds, a medium-sized sclerotic ring indicates that the animal is a predator, a large sclerotic ring indicates that it is nocturnal, and the largest ring size indicates it is a nocturnal ...
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.
Description. Udanoceratops was a large ceratopsian, estimated at to have reached nearly 4 m (13 ft) long with a weight of 700 kg (1,500 lb). [9] It is the largest leptoceratopsid known so far. [10] The skull had a short frill and no horns over the eyes or nose. Its skull was about 60 cm (600 mm) long.
Size comparison with human. Zuniceratops was a relatively small ceratopsian, measuring about 2.2 meters (7.2 ft) long and weighing around 175 kilograms (386 lb). [7] The basal skull length is estimated up to 40 centimetres (1.3 ft). [6]
Lokiceratops (meaning " Loki horned face") is an extinct genus of centrosaurine ceratopsian dinosaurs from the Late Cretaceous (Campanian) Judith River Formation of Montana, United States. The genus contains a single species, L. rangiformis, known from most of the skull and a partial skeleton. Four other ceratopsians are known from the same ...