Ceratopsia
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Ceratopsia or Ceratopia is a group of herbivorous, beaked dinosaurs that thrived in what are now North America, Asia and Europe, during the Cretaceous Period, although ancestral forms lived earlier, i
The Childrens Museum of Indianapolis Prenoceratops pieganensis 1
Psittacosaurus family
Andrewsi
Triceratops prorsus, specimen "Willard", picture 1
Psittacosaurus
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Psittacosaurus is a genus of extinct ceratopsian dinosaur from the Early Cretaceous of what is now Asia, existing between 125 and 105 million years ago. It is notable for being the most species-rich n
Ceratopsia
…fossil remains have no distinguishing characteristics that are not also found in other ceratopsians. Early members of the ceratopsian group, such as Psittacosaurus, were small bipedal animals. Later members, including ceratopsids like Centrosaurus and Triceratops, became very large quadrupeds and developed elaborate…
The Childrens Museum of Indianapolis Psittacosaurus skeleton cast
Holotype of P. mongoliensis (specimen AMNH 6254), American Museum of Natural History
P. mongoliensis AMNH 6253, the "Protiguanodon" holotype. Note the presence of gastroliths.
Holotype (IVPP V738) of P. sinensis