The laterosphenoid bone of early archosauriforms

  title={The laterosphenoid bone of early archosauriforms},
  author={James M. Clark and Johann Welman and Jacques A. Gauthier and J. Michael Parrish},
  journal={Journal of Vertebrate Paleontology},
ABSTRACT The laterosphenoid is an ossification of the pila antotica neurocranial cartilage in the anterior sidewall of the braincase of crocodylians and birds. Contrary to published reports, the bone is present in the basal archosauriforms Proterosuchus fergusi, Euparkeria capensis, and Erythrosuchidae, taxa that diverged prior to the origin of the archosaurian crown group. Its presence is thus a synapomorphy of Archosauriformes rather than of Archosauria. The bone appears to have been induced… 
The braincase of the early archosaurian reptile Erythrosuchus africanus
The most recent common ancestor of crocodiles and birds is hypothesized to have lacked a ‘semilunar depression’ and basisphenoid ‘intertuberal plate’, and to have had laterally positioned internal carotid foramina, a short lagena, an undivided metotic foramen, an unossified eustachian system, and elements of the tympanic cavity that were not pneumatized.
The anatomy of the palatoquadrate in the Lower Triassic Proterosuchus fergusi (Reptilia, Archosauromorpha) and its morphological transformation within the archosauriform clade
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New data on the braincase of the aetosaurian archosaur (Reptilia: Diapsida) Stagonolepis robertsoni Agassiz
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The postcranial skeleton of the erythrosuchid archosauriform Garjainia prima from the Early Triassic of European Russia
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The Epipterygoid of Crocodyliforms and Its Significance for the Evolution of the Orbitotemporal Region of Eusuchians
A broad survey of crocodyliform archosaurs and their outgroups was conducted to explore the evolutionary and morphological patterns of the orbitotemporal region, which is a highly apomorphic but poorly understood portion of the head, and indicates that the epipterygoid was only recently eliminated in croc Codyliform evolution.
Anatomy of the Enigmatic Reptile Elachistosuchus huenei Janensch, 1949 (Reptilia: Diapsida) from the Upper Triassic of Germany and Its Relevance for the Origin of Sauria
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A new archosaur from the Upper Triassic Pardonet Formation of British Columbia
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Classification and phylogeny of the diapsid reptiles
  • M. Benton
  • Environmental Science, Geography
  • 1985
A cladistic analysis of skull and skeletal characters of all described Permo-Triassic diapsid reptiles suggests some significant rearrangements to commonly held views of the Diapsida.
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The Amphisbaenia is a successful group of some 140 species of strange, specialized burrowing reptiles with reduced eyes and limbs, found mainly in parts of Africa and America, which show many unique features, including a large orbitosphenoid bone which has been regarded as a cartilage ossification like that of vertebrates in general.
The Development of the Vertebrate Skull
A vast amount of work has been done since on the skull, and no one has made more important contributions than Dr. R. de Beer himself, whose series of detailed studies on the development of the head and skull in various vertebrates from cyclostome to mammal, published from 1922 onwards form the basis for this fine monograph illustrated by 143 plates.
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The architecture of the jaw muscles and their tendons of Alligator mississippiensis is described and their function examined by electromyography. Alligator grabs its prey with forward lunges or rapid
The Dinosaur Heresies
This book supports the view that dinosaurs were warm-blooded, intelligent and agile creatures bearing little resemblance to existing reptiles.