Sentences with phrase «horned ceratopsians»
Other large herbivores, such as three - horned ceratopsians and armored ankylosaurs, also roamed the area (SN: 6/24/17, p. 4).
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Triceratops, for example, belongs to a big group of species called ceratopsians, many of which had frills and horns in a dizzying variety of shapes and sizes.
Because Wendiceratops is more closely related to a different group of ceratopsians than Triceratops — one that includes the recently discovered «Hellboy» dinosaur — the discovery suggests that the tall and high version of the nose horn evolved twice in the ceratopsian family.
But the scientists say that the most important trait is a tall horn on its nose, the earliest sighting of this feature that characterized later ceratopsians.
As the researchers report online today in PLOS ONE, the 6 - meter - long beast (artist's conception above) had the typical ceratopsian features of a frilly crown behind its head and probably had horns over its eyes.
The ceratopsians, horned and frilled dinosaurs that include the famous Triceratops, were one of the most successful and widespread dino groups, especially between about 90 million and 66 million years ago.
Many paleontologists have maintained that the horns of ceratopsians were rhinolike, and Witmer can now test that hypothesis.