Results 171 to 180 of about 4,665 (222)

Reassessment of the Early Cretaceous North American "troodontid" Geminiraptor suarezarum as a therizinosaurian and mosaic evolution of coelurosaurian maxillae. [PDF]

PLoS One
Freimuth WJ, Lively JR, Zanno LE.
europepmc   +1 more source

The Cretaceous theropodous dinosaur Gorgosaurus

, 1917
openaire   +2 more sources

The theropod furcula [PDF]

Journal of Morphology, 2009
AbstractThe furcula is a structure formed by the midline fusion of the clavicles. This is the element which is unique to theropods and is important for understanding the link between birds and other theropods. New specimens from basal theropods suggest that the furcula appeared very early in theropod history.
Mark Norell, Alan H Turner, Sterling J. Nesbitt   +2 more
exaly   +3 more sources

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Theropods and the Origin of Birds

2022
This chapter covers the characteristics and systematics of theropods while also considering the origin of birds. It mentions how early theropods were small, agile, lightly built, bipedal carnivores with long arms and legs. The evolutionary history of theropods varies since some gain forms with long and greatly enlarged forelimbs, while other forms ...
F. Harvey Pough, William E. Bemis, Betty Mcguire, Christine M. Janis   +3 more
openaire   +1 more source

A Crested Theropod Dinosaur from Antarctica

Science, 1994
Jurassic 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, 1986
An 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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Crouching theropod at the seaside. Matching footprints with metatarsal impressions and theropod authopods: a morphometric approach

Geological Magazine, 2016
AbstractWe compare theropod footprints with elongate metatarsal prints from central Italy with known autopod structures in major theropod groups, in order to more accurately define the trackmaker attribution. Our work, using morphometric analysis, shows the considerable potential of explorative methods such as PCA (principal component analysis) and ...
Romano, Marco, Citton, Paolo
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The Early History of Theropods

Short Courses in Paleontology, 1989
Theropods 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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Theropod Dinosaurs of the Cretaceous

Short Courses in Paleontology, 1989
Tyrannosaurus 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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