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A new carnosaur (Dinosauria, Theropoda) from the Jurassic of Xinjiang, People's Republic of China
In 1987, a Sino-Canadian expedition known as the Dinosaur Project (China – Canada – Alberta – Ex Terra) discovered a large theropod skeleton in the Upper Jurassic Shishugou Formation of the JunggarExpand
Two feathered dinosaurs from northeastern China
Current controversy over the origin and early evolution of birds centres on whether or not they are derived from coelurosaurian theropod dinosaurs. Here we describe two theropods from the UpperExpand
Cranial anatomy of tyrannosaurid dinosaurs from the Late Cretaceous of Alberta, Canada
It is concluded that the most parsimonious interpretation of relationships leads to the separation of the two species of Albertosaurus into Gorgosaurus libratus from the Campanian Dinosaur Park Formation and Albertosaurus sarcophagus from the upper Campanian/lower Maastrichtian Horseshoe Canyon Formation. Expand
Dinosaur Systematics: Theropod teeth from the Judith River Formation of southern Alberta, Canada
The identification of theropod teeth has the potential of refining stratigraphic determinations, extending temporal and geographic ranges, indicating relationships, and allowing paleoecological statements to be made on the relative diversity or abundance of certain taxa. Expand
A new specimen of Acrocanthosaurus atokensis (Theropoda, Dinosauria) from the Lower Cretaceous Antlers Formation (Lower Cretaceous, Aptian) of Oklahoma, USA
A new skeleton of Acrocanthosaurus atokensis is the most complete specimen collected and has the only known complete skull. Aspects of the new skeleton are described in detail, with special attentionExpand
New information on the anatomy and relationships of Dromaeosaurus albertensis (Dinosauria: Theropoda)
Repreparation and restudy of the holotype of Dromaeosaurus albertensis has produced new anatomical information useful for evaluating the relationships of dromaeosaurids. Expand
Osteology of Cryolophosaurus ellioti (Dinosauria: Theropoda) from the Early Jurassic of Antarctica and implications for early theropod evolution
An in-depth morphological description of Cryolophosaurus is pre-sented here, along with a rigorous phylogenetic analysis of theropod relationships consisting of 347 characters and 56 taxa, in an attempt to clarify the relationships of Crylophosaurus and to provide insight into questions sur-rounding early theropid evolution. Expand
Gigantism and comparative life-history parameters of tyrannosaurid dinosaurs
Growth patterns within the Tyrannosauridae are studied and it is determined that Tyrannosaurus rex's great stature was primarily attained by accelerating growth rates beyond that of its closest relatives. Expand
Bird-like characteristics of the jaws and teeth of troodontid theropods (Dinosauria, Saurischia)
A critical examination of all jaws and teeth attributed to Troodon, Stenonychosaurus, and Pectinodon concluded that Troodon is the senior synonym of these genera, and that the name Troodontidae has priority over Saurornithoididae. Expand