Results 171 to 180 of about 2,961 (200)

Enamel microstructure of ceratopsian teeth (Reptilia, Archosauria)

Geobios, 1988
Abstract The microstructural study of the enamel of ceratopstiandinosaur teeth indicates the presence of two layers, an external non-prismatic layer and an internal prismatic one. Therefore, the prismatic structure among Dinosaurs and other reptiles cannot be related to the feeding habits.
Yannicke Dauphin, Jean-Jacques Jaeger, Halszka Osmolska   +2 more
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The Coccidia (Apicomplexa) of the Archosauria (Crocodylia: Eusuchia) of the World

Journal of Parasitology, 2020
The order Crocodylia (suborder Eusuchia) includes 27 species of alligators, caimans, crocodiles, and gharials that are cosmopolitan in distribution, inhabiting subtropical and tropical locations. Numerous surveys (many of them trivial, with small sample sizes) have reported a wide variety of blood and intestinal apicomplexans from 17/27 (63 ...
Donald W, Duszynski, Chris T, McAllister, Marisa, Tellez   +2 more
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Pachycephalosaur paleoneurology (Archosauria: Ornithischia)

Journal of Vertebrate Paleontology, 1989
ABSTRACT Pachycephalosaur endocranial casts display a distinctive suite of traits that include large divergent olfactory bulbs, large olfactory nerves, short thick olfactory tracts, a moderately expanded cerebrum not separated from optic lobes and cerebellum dorsally, steep cranial flexure, and reduced pontine flexure.
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Bone microstructure ofLewisuchus admixtusRomer, 1972 (Archosauria, Dinosauriformes)

Historical Biology, 2017
AbstractLewisuchus admixtus is a basal dinosauriform coming from Late Triassic outcrops of NW Argentina. Although this taxon was recently anatomically restudied, histological data is still wanting. The microstructure of the long bones (femur and two tibie) reveals a relatively fast rate of growth, comparable with that seen in other basal ...
García Marsa, Jordi Alexis, Agnolin, Federico, Novas, Fernando Emilio   +2 more
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The braincase of Prestosuchus chiniquensis (Archosauria: Suchia)

Geological Society, London, Special Publications, 2013
Abstract The osteology of an almost complete braincase of the rauisuchian archosaur Prestosuchus chiniquensis from the Middle Triassic of Brazil is described for first time, based on two specimens (UFRGS-PV-0629-T and UFRGS-PV-0156-T) .
Bianca Martins Mastrantonio, Cesar L. Schultz, Julia B. Desojo, Juliana Bittencourt Garcia   +3 more
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The Skull and Head Muscles of Archosauria

2019
Archosaurs is the clade composed by birds (Aves) and crocodiles, alligators, and the gharial (Crocodylia). This relatedness is not obvious and for a long time was not taken into account, as birds were seen as a group separate even from the rest of reptiles.
Daniel Smith-Paredes, Bhart-Anjan S. Bhullar   +1 more
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Pelvic and hindlimb myology of the basal archosaur Poposaurus gracilis (archosauria: Poposauroidea)

Journal of Morphology, 2011
AbstractThe discovery of a largely complete and well preserved specimen of Poposaurus gracilis has provided the opportunity to generate the first phylogenetically based reconstruction of pelvic and hindlimb musculature of an extinct nondinosaurian archosaur.
Schachner, Emma R., Manning, Phillip L., Dodson, Peter   +2 more
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Sarmatosuchusand the early history of the Archosauria

Journal of Vertebrate Paleontology, 1997
ABSTRACT A detailed description of the early archosaur Sarmatosuchus otschevi Sennikov, 1994, from the Middle Triassic Donguz Formation of southern European Russia, is presented. New morphological data forms the basis of a preliminary investigation of the phylogenetic relationships between a selection of the earliest archosaurs.
David J. Gower, Andrei G. Sennikov
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On the cervical vertebrae of the Pterodactyloidea (Reptilia: Archosauria)

Zoological Journal of the Linnean Society, 1986
Within the Pterodactyloidea, the cervical vertebrae show considerable variation. These elements are also sufficiently common and contain enough anatomical information to make them taxonomically valuable. A survey of these vertebrae concludes that most known pterodactyloids fall into two groups: long-necked forms with attenuated cervical vertebrae that ...
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The Archosauria from the Woodbine Formation (Cenomanian) in Texas

Journal of Paleontology, 1997
The archosaur fauna from the Woodbine Formation (Cenomanian), Tarrant County, Texas includes crocodiles, theropod, nodosaurid, and hadrosaurid dinosaurs. A new neosuchian crocodile,Woodbinesuchus byersmauriceinew genus and species, appears to be a longirostrine goniopholid.
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