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The Evolution of the Antorbital Cavity of Archosaurs: A Study in Soft-Tissue Reconstruction in the Fossil Record with an Analysis of the Function of Pneumaticity
ABSTRACT The most commonly cited apomorphy of Archosauriformes is an opening in the snout known as the antorbital cavity. Despite the ubiquity and prominence of the antorbital cavity, its functionExpand
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Using CT to Peer into the Past: 3D Visualization of the Brain and Ear Regions of Birds, Crocodiles, and Nonavian Dinosaurs
Until relatively recently, information on the internal skull structures of fossil taxa relied on fortuitous breaks, aggressive removal of rock matrix (Galton 1989, 2001), sectioning with a sawExpand
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CRANIOFACIAL ANATOMY OF MAJUNGASAURUS CRENATISSIMUS (THEROPODA: ABELISAURIDAE) FROM THE LATE CRETACEOUS OF MADAGASCAR
Abstract Recent fieldwork in the Upper Cretaceous (Maastrichtian) Maevarano Formation, northwest Madagascar, has yielded important new skull material of the abelisaurid theropod, MajungasaurusExpand
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Structural Extremes in a Cretaceous Dinosaur
Fossils of the Early Cretaceous dinosaur, Nigersaurus taqueti, document for the first time the cranial anatomy of a rebbachisaurid sauropod. Its extreme adaptations for herbivory at ground-levelExpand
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2 The Extant Phylogenetic Bracket and the importance of reconstructing soft tissues in fossils
Fossils usually provide paleontologists with little more than bones and teeth as primary data. Because the broad aim of functional morphological analyses of extinct organisms is to breathe life intoExpand
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Homology of facial structures in extant archosaurs (birds and crocodilians), with special reference to paranasal pneumaticity and nasal conchae
  • L. Witmer
  • Biology, Medicine
  • Journal of morphology
  • 1 September 1995
Homology of virtually all major components of facial anatomy is assessed in Archosauria in order to address the function of the antorbital cavity, an engimatic structure that is diagnostic for theExpand
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New Insights Into the Brain, Braincase, and Ear Region of Tyrannosaurs (Dinosauria, Theropoda), with Implications for Sensory Organization and Behavior
The braincase region of tyrannosaurs was investigated to provide insights on anatomical attributes relevant to inferences of sensory biology and behavior. CT scanning focused on three specimens ofExpand
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The craniofacial air sac system of Mesozoic birds (Aves)
Birds are characterized by pneumatization of their skeletons by epithelial diverticula from larger, air—filled cavities. The diverticula—or ‘air sacs’—that invade the postcranium result fromExpand
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Archosaur adductor chamber evolution: Integration of musculoskeletal and topological criteria in jaw muscle homology
The homologies of jaw muscles among archosaurs and other sauropsids have been unclear, confounding interpretation of adductor chamber morphology and evolution. Relevant topological patterns ofExpand
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Neuroanatomy of flying reptiles and implications for flight, posture and behaviour
Comparison of birds and pterosaurs, the two archosaurian flyers, sheds light on adaptation to an aerial lifestyle. The neurological basis of control holds particular interest in that flight demandsExpand
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