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Tyrannosaurid bones with tooth marks represent about 2% of known fossils with preserved tooth marks. [124] Tyrannosaurid teeth were used as holdfasts for pulling meat off a body, rather than knife-like cutting functions. [125] Tooth wear patterns hint that complex head shaking behaviors may have been involved in tyrannosaur feeding. [125]
Daspletosaurus (/ d æ s ˌ p l iː t ə ˈ s ɔːr ə s / das-PLEET-ə-SOR-əs; meaning "frightful lizard") is a genus of tyrannosaurid dinosaur that lived in Laramidia between about 78 and 74.4 million years ago, during the Late Cretaceous Period.
Albertosaurus (/ æ l ˌ b ɜːr t ə ˈ s ɔːr ə s /; meaning "Alberta lizard") is a genus of large tyrannosaurid theropod dinosaur that lived in northwestern North America during the early to middle Maastrichtian age of the Late Cretaceous period, about 71 million years ago.
Engraved on the tooth is a picture of the ship Francis, which artist Fred Myrick served on during the early 1800s. Now, sperm whales are protected under the Marine Mammal Protection Act. So, in ...
He called this group Tyrannoraptora (which in the absence of papers that recover a Tyrannosaur-maniraptoran clade), is a clade which contains most Coelurosaurs. [39] A 2007 analysis found the family Coeluridae , including the Late Jurassic North American genera Coelurus and Tanycolagreus , to be the sister group of Tyrannosauroidea.
The United States Food and Drugs Administration is warning pet owners about a common medication given to pets to treat arthritis. The F.D.A. now says that the drug Librela may be associated with ...
A construction worker who murdered his 76-year-old former employer in a frenzied tool attack faces a life sentence in prison for his crimes.. Heber Enoc Diaz, 27, of Pasadena, was convicted as ...
Dinosaur teeth have been studied since 1822 when Mary Ann Mantell (1795-1869) and her husband Dr Gideon Algernon Mantell (1790-1852) ...