• Publications
  • Influence
Joint investigations of the Middle Pliocene climate I: PRISM paleoenvironmental reconstructions
Abstract The Pliocene epoch represents an important transition from a climate regime with high-frequency, low-amplitude oscillations when the Northern Hemisphere lacked substantial ice sheets, to theExpand
The phylogenetic position of the Tyrannosauridae; implications for theropod systematics
The inclusion of the Tyrannosauridae within Maniraptora suggests a major adaptive radiation of coelurosaurs within Cretaceous Asiamerica comparable to contemporaneous radiations in various herbivorous dinosaurian clades. Expand
Phylogenetic definitions and nomenclature of the major taxonomic categories of the carnivorous Dinosauria (Theropoda)
The new node-based name Eumaniraptora is proposed to refer to the most recent common ancestor of Deinonychus and Neornithes and all descendants of that ancestor. Expand
The last several years have seen the discovery of many new theropod dinosaur taxa. Data obtained from these and from fragmentary forms not previously utilized in cladistic analyses are examined. AnExpand
The arctometatarsalian pes, an unusual structure of the metatarsus of Cretaceous Theropoda (Dinosauria: Saurischia)
Morphometric analysis indicates that the arctometatarsalian structure is significantly more elongate and gracile than underived metatarsi, and this structure is associated with relatively elongate distal hind limbs per unit femoral length. Expand
The Fossil Record of Predation in Dinosaurs
The K/T extinction event(s) did not end dinosaurian predation, because carnivorous birds remained prominent predators throughout the Cenozoic Era, and dinosaurian predator-prey complexes varies as a function of time and geography. Expand
Carbon and nitrogen isotopic analysis of Pleistocene mammals from the Saltville Quarry (Virginia, USA): Implications for trophic relationships
The isotopic evidence supports the view that a giant ground sloth was primarily herbivorous, as opposed to competing hypotheses for an omnivorous or carnivorous nature, which has broader implications for the subsequent mass extinction of mega-herbivore clades at the end of the Pleistocene epoch. Expand
Quaternary paleoceanography of the deep Arctic Ocean based on quantitative analysis of Ostracoda
Abstract Ostracodes were studied from deep Arctic Ocean cores obtained during the Arctic 91 expedition of the Polarstern to the Nansen, Amundsen and Makarov Basins, the Lomonosov Ridge, Morris JesupExpand