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Micropachycephalosaurus (meaning "small thick-headed lizard") is an extinct genus of basal marginocephalian dinosaur containing only the type species, Micropachycephalosaurus hongtuyanensis. It lived in China during the Late Cretaceous ( Campanian ) and was found in the Jiangjunding Formation .
Eustreptospondylus (Size Comparison) Gallimimus (Size Comparison) Halszkaraptor (Size Comparison) Heterodontosauridae (Size Comparison) Huaxiagnathus (Size Comparison) Kentrosaurus (Size Comparison) Lourinhanosaurus (Size Comparison) Macroolithus (Size Comparison) Neuquenraptor (Size Comparison; Othnielosaurus (Size Comparison) Paranthodon ...
The small size of most pachycephalosaur species and lack of skeletal adaptation indicates that they were not climbers and primarily ate food close to the ground. Mallon et al. (2013) examined herbivore coexistence on the island continent of Laramidia , during the Late Cretaceous and concluded that pachycephalosaurids were generally restricted ...
The varying size and intricacy of margins in Marginocephalia have shown many signs of sexual dimorphism. [17] Although the intricate frills of marginocephalians sometimes seem to present with dimorphic features, many doubt the validity of these claims. [ 17 ]
Restoration Size compared to a human. Pachycephalosaurus was bipedal and possibly the largest of all pachycephalosaurids. [27] It has been estimated that Pachycephalosaurus was about 4.5 metres (14.8 ft) long and weighed about 370–450 kilograms (820–990 lb).
Agathaumas (/ æ ɡ ə ˈ θ ɔː m ə s /; "great wonder") is a dubious genus of a large ceratopsid dinosaur that lived in Wyoming during the Late Cretaceous (late Maastrichtian stage, 66 million years ago).
Reconstruction of a Tyrannotitan feeding on a Chubutisaurus Estimated size compared to a human. Tyrannotitan was a large animal, reaching 12.2–13 metres (40–43 ft) in length and 4.8–7 t (5.3–7.7 short tons) in body mass.
Ralph Chapman and others performed a detailed statistical analysis on the relative size of dome to braincase in 23 Stegoceras validum domes and domes from 6 other pachycephalosaur taxa. They were able to account for the age and development of the specimens using the size of the braincase as an indicator.