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Craniofacial ontogeny in Tyrannosauridae (Dinosauria, Coelurosauria)
ABSTRACT A study of ontogenetic variation is used to clarify aspects of tyrannosaurid taxonomy and investigate the supposed phenomenon of dwarfism in the clade. A hypothetical ontogenetic trajectoryExpand
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A NEW GENUS AND SPECIES OF TYRANNOSAUROID FROM THE LATE CRETACEOUS (MIDDLE CAMPANIAN) DEMOPOLIS FORMATION OF ALABAMA
Abstract The discovery of a new genus and species of tyrannosauroid from the Demopolis Formation (middle Campanian) of Alabama increases the known diversity of the clade, although it does notExpand
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Diversity of late Maastrichtian Tyrannosauridae (Dinosauria: Theropoda) from western North America
The tooth taxon Aublysodon mirandus was reinstated following the collection of nondenticulate tyrannosaurid premaxillary teeth from late Maastrichtian deposits in western North America. A small skullExpand
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Tyrannosaur Paleobiology: New Research on Ancient Exemplar Organisms
Tyrannosaurs Revisited Tyrannosaurs represent some of the most successful and largest carnivores in Earth's history. An expanding fossil record has allowed studies of their evolution and behaviorExpand
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A long-snouted, multihorned tyrannosaurid from the Late Cretaceous of Mongolia
Tyrannosaurid theropods are characterized by a generalized body plan, and all well-known taxa possess deep and robust skulls that are optimized for exerting powerful bite forces. The fragmentary LateExpand
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A NEW GENUS OF DERIVED PACHYCEPHALOSAURIAN FROM WESTERN NORTH AMERICA
Abstract Pachycephalosaurian specimens from the Upper Cretaceous (upper Campanian) Kirtland Formation of northwestern New Mexico include a partial skull that preserves much of the basicranium. ItExpand
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THE SYSTEMATIC UTILITY OF THEROPOD ENAMEL WRINKLES
STEPHEN L. BRUSATTE,*'1 ROGER B. J. BENSON,2 THOMAS D. CARR,3 THOMAS E. WILLIAMSON,4 and PAUL C. SERENO5; 1Department of Earth Sciences, University of Bristol, Wills Memorial Building, Queens Road,Expand
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Bistahieversor sealeyi, gen. et sp. nov., a New Tyrannosauroid from New Mexico and the Origin of Deep Snouts in Tyrannosauroidea
Skeletal remains of Late Cretaceous (Campanian and Maastrichtian) tyrannosauroids are rare in southwestern North America (Carr and Williamson, 2000). Historically, the identity and diversity ofExpand
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The Osteology of Alioramus, A Gracile and Long-Snouted Tyrannosaurid (Dinosauria: Theropoda) from the Late Cretaceous of Mongolia
Abstract The Late Cretaceous tyrannosaurid theropod Alioramus has long been one of the most puzzling large carnivorous dinosaur taxa, largely because for several decades it has been represented onlyExpand
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The phylogeny and evolutionary history of tyrannosauroid dinosaurs
Tyrannosauroids—the group of carnivores including Tyrannosaurs rex—are some of the most familiar dinosaurs of all. A surge of recent discoveries has helped clarify some aspects of their evolution,Expand
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