The systematics of Late Jurassic tyrannosauroid theropods from Europe and North America

• Autorzy: Brusatte S.L. , Benson R. B. J.
• Języki publikacji: EN

Abstrakty

EN

Recent discoveries of more than ten new species of tyrannosauroid theropods are helping to understand the origin and evolu− tion of colossal body size and other characteristic features of Tyrannosaurus rex and its terminal Cretaceous relatives. Partic− ularly important has been the discovery and reinterpretation of Late Jurassic tyrannosauroids from Europe and North Amer− ica, which are intermediate in size and phylogenetic position between small basal tyrannosauroids and the largest Late Cre− taceous species. The fragmentary nature of these Jurassic specimens, however, has frustrated attempts to understand their systematics and phylogeny. A new specimen from the Late Jurassic of England was recently named as a new species (Stokesosaurus langhami) of the genus Stokesosaurus, which is known from several fragmentary fossils from North Amer− ica. We review the systematics and phylogeny of these European and North American specimens and show that there are no unequivocal synapomorphies uniting them. Furthermore, a revised phylogenetic analysis does not recover them as sister taxa. This necessitates a taxonomic revision of this material, and we name a new genus (Juratyrant) for theBritish specimen.

Słowa kluczowe

EN

systematics; Late Jurassic; tyrannosauroid theropod; theropod; Europe; North America; Dinosauria; Theropoda; Tyrannosauridae; Tyrannosaurus; anatomy; Jurassic; paleontology

• Wydawca: -
• Czasopismo: Acta Palaeontologica Polonica
• Rocznik: 2013
• Tom: 58
• Numer: 1
• Opis fizyczny: p.47-54,fig.,ref.

Twórcy

autor

Brusatte S.L.

• Division of Paleontology, American Museum of Natural History, Central Park West at 79th St., New York, NY, 10024, USA

autor

Benson R. B. J.

• Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, U.K.

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