Results 131 to 140 of about 1,623 (162)
Osteohistology of the unusually fast-growing theropod dinosaur Ceratosaurus. [PDF]
J AnatSombathy R, O'Connor PM, D'Emic MD.
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A Crested Theropod Dinosaur from Antarctica
Science, 1994Jurassic fossil vertebrates collected from the Falla Formation in the Central Transantarctic Mountains included a partial skull and postcranial elements of a crested theropod, Cryolophosaurus ellioti gen. nov. sp. nov.
W R, Hammer, W J, Hickerson
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Baryonyx, a remarkable new theropod dinosaur
Nature, 1986An extremely large claw bone, some 30 cm long, was found in Wealden (Lower Cretaceous) deposits in a Surrey claypit in January 1983. This led to the discovery the following month of the well-preserved skeleton of a new large theropod dinosaur. Only one other theropod specimen comprising more than a few bones had ever been found in Britain, and that ...
A J, Charig, A C, Milner
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Uncertain Averaptoran Theropods
2013Several theropods have been briefly described and assigned to the clade Dromaeosauridae. However, some of these taxa may be excluded from such theropod group, based on several osteological features. Regrettably, most of these taxa were only briefly described, or are rather fragmentary, and consequently a complete cladistic analysis is beyond the ...
Federico L. Agnolín, Fernando E. Novas
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Mass Prediction in Theropod Dinosaurs
Historical Biology, 2004Body size is a crucial life history parameter for an organism. Therefore, mass estimation for fossil species is important for many kinds of analyses. Several attempts have been made to yield equations applicable to dinosaurs. In this paper, we offer bi- and multivariate equations based on log transformed appendicular skeleton data from a sample of 16 ...
P. Christiansen, R.A. Fariña †
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The earliest dromaeosaurid theropod from South America
Nature, 2005The evolutionary history of Maniraptora, the clade of carnivorous dinosaurs that includes birds and the sickle-clawed Dromaeosauridae, has hitherto been largely restricted to Late Jurassic and Cretaceous deposits on northern continents. The stunning Early Cretaceous diversity of maniraptorans from Liaoning, China, coupled with a longevity implied by ...
Peter J, Makovicky +2 more
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Theropod Dinosaurs of the Cretaceous
Short Courses in Paleontology, 1989Tyrannosaurus rex is unquestionably the most famous dinosaur, probably because of its awesome size and appearance, and its apparent strength, agility and prowess. In spite of its fame, the anatomy and relationships of Tyrannosaurus and its kin remain poorly understood. By Late Cretaceous times (about 65 to 100 million years ago), carnivorous dinosaurs (
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The Early History of Theropods
Short Courses in Paleontology, 1989Theropods have traditionally been portrayed as extinct bipedal predators built along the lines of such celebrated terrors as Tyrannosaurus, Deinonychus, and Allosaurus. The earliest theropods indeed fit that image, and all of them are decidedly extinct.
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