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Dinosaur teeth have been studied since 1822 when Mary Ann Mantell (1795-1869) and her husband Dr Gideon Algernon Mantell (1790-1852) ...
In 2001, William Abler observed that Albertosaurus tooth serrations resemble a crack in the tooth ending in a round void called an ampulla. [39] Tyrannosaurid teeth were used as holdfasts for pulling flesh off a body, so when a tyrannosaur pulled back on a piece of meat, the tension could cause a purely crack-like serration to spread through ...
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]
He called this group Tyrannoraptora (which in the absence of papers that recover a Tyrannosaur-maniraptoran clade), is a clade which contains most Coelurosaurs. [37] A 2007 analysis found the family Coeluridae , including the Late Jurassic North American genera Coelurus and Tanycolagreus , to be the sister group of Tyrannosauroidea.
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.
Extraneous tooth cusps are documented in Tyrannosaurus. [28] Some teeth show evidence of bite marks by other Tyrannosaurus. [28] The Tyrannosaurus rex specimen AMNH 5027 has a deformity fusing the centra of the seventh and eighth back vertebrae. The centra of the tenth neck and first back vertebrae are fused in a similar fashion. [31]
In 1876 Cope created an Aublysodon lateralis, based on specimen AMNH 3956, [13] [14] a tooth of a juvenile tyrannosaur which has been synonymized with Deinodon horridus. [15] In 1892 Marsh named two more species: Aublysodon amplus and Aublysodon cristatus , respectively based on teeth YPM 296 and YPM 297; the latter has also been placed in the ...
Tyrannosaurid bones with tooth marks represent about 2% of known fossils with preserved tooth marks. [8] Tyrannosaurid teeth were used as holdfasts for pulling meat off a body, rather than knife-like cutting functions. [14] Tooth wear patterns hint that complex head shaking behaviors may have been involved in tyrannosaur feeding. [14]