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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 ...
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 ...
Though it was a bulky animal, it had many hollow bones which saved weight. The arms were among the largest of any bipedal dinosaur at 2.4 m (7.9 ft) long, with large, blunt claws on its three-fingered hands. The legs were relatively short, and bore blunt claws. Its vertebrae had tall neural spines that formed a "sail" along its back.
Studies of the skull anatomy of the most well-known species, Carnotaurus sastrei, lead to debate over what type of prey these animals hunted. Studies by Mazzetta et al. in 1998, 2004, and 2009 suggest that the jaw structure in Carnotaurus was built for swift, rather than strong, bites, with adaptations for mandibular kinesis to assist in ...
Spinosauridae (or spinosaurids) is a clade or family of tetanuran theropod dinosaurs comprising ten to seventeen known genera.Spinosaurid fossils have been recovered worldwide, including Africa, Europe, South America and Asia.
This is an accepted version of this page This is the latest accepted revision, reviewed on 28 January 2025. Extinct subfamily of reptiles Majungasaurinae Temporal range: Late Cretaceous, 94–66 Ma Pre๊ ๊ O S D C P T J K Pg N Majungasaurus crenatissimus mounted skeleton, Stony Brook University Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Clade: Dinosauria ...
Our very ancient animal ancestors had tails. “We found a single mutation in a very important gene,” said Bo Xia, a geneticist at the Broad Institute and co-author of a study published ...
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 ...