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Carnotaurus is the only known carnivorous bipedal animal with a pair of horns on the frontal bone. [45] The use of these horns is not entirely clear. Several interpretations have revolved around use in fighting conspecifics or in killing prey, though a use in display for courtship or recognition of members of the same species is possible as well.
Carnotaurus is a derived member of the Abelisauridae, a group of large theropods that occupied the large predatorial niche in the southern Landmasses of Gondwana during the late Cretaceous. Carnotaurus was a lightly built, bipedal predator, measuring 8 to 9 m (26 to 30 ft) in length and weighing at least 1 metric ton (0.98 long tons; 1.1 short ...
The fossilised skin of Carnotaurus (an abelisaurid and therefore not a coelurosaur) shows an unfeathered, reptile-like skin with rows of bumps, [98] but the conclusion that Carnotaurus was necessarily featherless has been criticized as the impressions do not cover the whole body, being found only in the lateral region but not the dorsum. [99]
This is an accepted version of this page This is the latest accepted revision, reviewed on 27 December 2024. Extinct clade of dinosaurs Ceratosaurs Temporal range: Sinemurian - Maastrichtian, 199.3–66 Ma Pre๊ ๊ O S D C P T J K Pg N Six ceratosaurs (top left to bottom right): Rugops, Elaphrosaurus, Majungasaurus, Carnotaurus, Ceratosaurus, Berthasaura Scientific classification Domain ...
Dryptosaurus was a large, bipedal, ground-dwelling carnivore that could grow up to 7.5 metres (25 ft) long and weigh up to 756–1,500 kilograms (1,667–3,307 lb). Although it is now largely unknown outside of academic circles, the famous 1897 painting of the genus by Charles R. Knight made Dryptosaurus one of the more widely known dinosaurs ...
By comparison, the giraffe, the tallest of all living land animals, is only 4.8 to 5.6 metres (15.74 to 18.3 ft) tall. The best evidence indicates that the most massive were Argentinosaurus (65–80 metric tons [ 27 ] [ 23 ] [ 24 ] ), Mamenchisaurus sinocanadorum (60-80 metric tons [ 24 ] ), the giant Barosaurus specimen (60-80+ metric tons ...
The discovery of other abelisaurids like Carnotaurus has helped clarify its position; in 1986 José Bonaparte concluded it was an abelisaurid. Indosuchus is defined based on how the frontonasal suture is placed anteriorly compared to lacrimal, according to Novas et al., 2004. [2]
Compared to other Morrison theropods, Ceratosaurus showed taller neural spines on the foremost tail vertebrae, which were vertical rather than inclined towards the back. Together with the deep chevron bones on the underside of the tail, they indicate a deep, "crocodile-like" tail possibly adapted for swimming.