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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
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Dinosaur Systematics: Theropod teeth from the Judith River Formation of southern Alberta, Canada
Abstract Few attempts have been made in the past to identify dinosaur teeth at the species level, and consequently, many have assumed that they cannot be identified. However, a diverse assemblage ofExpand
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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
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Gigantism and comparative life-history parameters of tyrannosaurid dinosaurs
How evolutionary changes in body size are brought about by variance in developmental timing and/or growth rates (also known as heterochrony) is a topic of considerable interest in evolutionaryExpand
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Bird-like characteristics of the jaws and teeth of troodontid theropods (Dinosauria, Saurischia)
ABSTRACT The discovery of a new dentary of “Stenonychosaurus inequalis” with six germ teeth prompted a critical examination of all jaws and teeth attributed to Troodon, Stenonychosaurus, andExpand
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Abstract A collection of over 1,700 small theropod teeth from the Judith River Group (Campanian; ∼79.5–74 Ma) allows our understanding of the diversity and variation of small theropods in thisExpand
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An integrative phylogenetic and extrapolatory approach to the reconstruction of dromaeosaur (Theropoda: Eumaniraptora) shoulder musculature
Dromaeosauridae is the sister taxon of the Avialae; thus, an investigation of dromaeosaur shoulder girdle musculature and forelimb function provides substantial information regarding changes in theExpand
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Skull structure and evolution in tyrannosaurid dinosaurs
Tyrannosauridae can be subdivided into two distinct subfamilies—the Albertosaurinae and the Tyrannosaurinae. Previ− ously recognized subdivisions Aublysodontinae and Shanshanosaurinae are rejectedExpand
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Resolving the long-standing enigmas of a giant ornithomimosaur Deinocheirus mirificus
The holotype of Deinocheirus mirificus was collected by the 1965 Polish–Mongolian Palaeontological Expedition at Altan Uul III in the southern Gobi of Mongolia. Because the holotype consists mostlyExpand
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A new carnosaur (Dinosauria: Theropoda) from the Lower Cretaceous of Japan
An associated skeleton from the Kitadani quarry of the Lower Cretaceous (Albian) strata in Fukui Prefecture, Japan, represents a new genus and species of carnosaur (Dinosauria: Theropoda). TheExpand
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