Results 61 to 70 of about 833 (186)

Cranial anatomy ofThalassiodracon hawkinsii(Reptilia, Plesiosauria) from the Early Jurassic of Somerset, United Kingdom [PDF]

Journal of Vertebrate Paleontology, 2011
The taxonomy and systematics of the earliest plesiosaurians is poorly resolved. This limits our understanding of the diversification of one of the most successful clades of secondarily aquatic tetrapods. Here we provide a robust diagnosis of Thalassiodracon hawkinsii from the Pre-planorbis Beds (Triassic-Jurassic boundary interval) of the United ...
Benson, Roger B J, Bates, Karl T., Johnson, Mark R., Withers, Philip J.; id_orcid 0000-0002-1946-5647   +3 more
openaire   +4 more sources

An integrated approach to understanding the role of the long neck in plesiosaurs [PDF]

Acta Palaeontologica Polonica, 2017
The evolution and function of the long neck in plesiosaurs, and how the problems associated with stiffness or flexibility were overcome during feeding, or rapid swimming during predator avoidance, are explored, and a new interpretation for the function ...
Leslie F. Noè, Michael A. Taylor, Marcela Gómez-Pérez   +2 more
doaj   +1 more source

Osteology of the cryptocleidoid plesiosaur Tatenectes laramiensis, with comments on the taxonomic status of the Cimoliasauridae [PDF]

, 2009
Recent field work in the Bighorn Basin, Wyoming has recovered significant new material of the plesiosaur Tatenectes laramiensis. The majority of cryptocleidoid plesiosaurs have been recovered from Middle and Upper Jurassic units (Oxford and Kimmeridge ...
Brenner R. L., Brown D. S., Brown D. S., Cabrera A., Chatterjee S., Cope E. D., Cruickshank A. R. I., Cruickshank A. R. I., de Blainville H. D., DeLair J. B., F. Robin O'Keefe, Gasparini Z., Gilmore C. W., Hallie P. Street, Imlay R. W., Kear B. P., Kvale E. P., Leidy J., Leidy J., Marsh O. C., Marsh O. C., Marsh O. C., Mehl M. G., O'Keefe F. R., O'Keefe F. R., O'Keefe F. R., O'Keefe F. R., O'Keefe F. R., O'Keefe F. R., Owen R., Persson P. O., Persson P. O., Persson P. O., Pipiringos G. N., Reeside J. B., Swofford D. L., Welles S. P., Welles S. P., Welles S. P.   +38 more
core   +3 more sources

Endocranial anatomy of plesiosaurians (Reptilia, Plesiosauria) from the Late Cretaceous (Turonian) of Goulmima (southern Morocco) [PDF]

Journal of Vertebrate Paleontology, 2019
Despite recent advances in noninvasive imaging, Plesiosauria remains one of the least explored clades of reptiles with respect to paleoneuroanatomy. Only partial endocasts, obtained from either latex casts or imprints left on the braincase, have been described.
Allemand, Rémi, Houssaye, Alexandra, Bardet, Nathalie, Vincent, Peggy   +3 more
openaire   +2 more sources

A new partial skeleton of a cryptocleidoid plesiosaur from the Upper Jurassic Sundance Formation of Wyoming [PDF]

, 2010
Cryptocleidoid plesiosaurs from the Upper Jurassic are well known from the Oxford Clay (Callovian) of the United Kingdom. The plesiosaurs of the nearly coeval Sundance Formation (Oxfordian) of North America are poorly known, but are thought to include ...
O’Keefe, F. Robin, Wilhelm, Benjamin C.   +1 more
core   +2 more sources

Exploring the cranial morphology and possible convergences of Triassic non‐crocodylomorph pseudosuchians (Archosauria: Pseudosuchia) with other sauropsids through linear morphometrics

The Anatomical Record, EarlyView.
Abstract Triassic pseudosuchians had highly diversified cranial morphologies. These archosaurs occupied diverse ecological roles, ranging from terrestrial predators and herbivores to semiaquatic ambush predators and possible waders. Here, we apply linear cranial morphometrics to assess possible convergences with other sauropsids from the clades ...
Rafael Terras, Rodrigo Temp Müller, Leonardo Kerber, Mirian Carbonera   +3 more
wiley   +1 more source

Uncovering the diversification history of marine tetrapods: ecology influences the effect of geological sampling biases [PDF]

, 2011
Mesozoic terrestrial vertebrates gave rise to sea-going forms independently among the ichthyosaurs, sauropterygians, thalattosaurs, crocodyliforms, turtles, squamates, and other lineages. Many passed through a shallow marine phase before becoming adapted
Benson, R. B. J., Butler, R. J.
core   +1 more source

The oldest Brazilian snakes from the cenomanian (Early Late Cretaceous) [PDF]

, 2014
South American Mesozoic snake diversity is mostly represented by genera from the Cenomanian (Najash), Santonian- Campanian (Dinilysia), and Campanian-Maastrichtian (Alamitophis, Patagoniophis, Rionegrophis, and Australophis) of Patagonia, Argentina.
Albino, Adriana Maria, Hsiou, Annie, Medeiros, Manuel, Santos, Ronny   +3 more
core   +1 more source

A plesiosaur containing an ichthyosaur embryo as stomach contents from the Sundance Formation of the Bighorn Basin, Wyoming [PDF]

, 2009
Herein we report the discovery of an ichthyosaur embryo from the Upper Member of the Sundance Formation (Oxfordian) of the Bighorn Basin, Wyoming. The specimen is the first known ichthyosaur embryo from the Upper Jurassic, and is the first Jurassic ...
Andrews C. W., Andrews C. W., Brown D. S., F. Robin O'Keefe, Gilmore C. W., Hallie P. Street, Jean Pierre Cavigelli, John J. Socha, Knight W. C., Marsh O. C., Martill D. M., Massare J. A., Massare J. A., Mazin J., O'Keefe F. R., O'Keefe F. R., R. Dennis O'Keefe, Rieppel O., Sato T., Wahl W. R., Wahl W. R., Wings O., Zaher H.   +22 more
core   +2 more sources

New material of Alierasaurus ronchii (Synapsida, Caseidae) from the Permian of Sardinia (Italy), and its phylogenetic affinities [PDF]

, 2017
New characters of the giant caseid Alierasaurus ronchii are described here based on material recovered from the type locality in the Permian deposits of Cala del Vino Formation (Sardinia NW) and additional preparation of the previously collected ...
Maganuco, Simone, Nicosia, Umberto, Romano, Marco, Ronchi, Ausonio   +3 more
core   +1 more source