Results 101 to 110 of about 244 (140)

Tooth Implantation and Replacement in Sauropterygia

Palaontologische Zeitschrift, 2001
Tooth replacement and implantation of Sauropterygia is described with special reference to the generaPlacodus andNothosaurus. Tooth replacement is horizontal, with the exception of the enlarged crushing tooth plates on the maxilla, palatine, and dentary ofPlacodus (placodonts), which are replaced vertically.
Olivier Rieppel
exaly   +2 more sources

Sauropterygia: Histology of Plesiosauria

2021
Plesiosaurs are an iconic group of Mesozoic marine reptiles, uniquely equipped with four flippers of the same size and shape. Plesiosaurs first appeared in the latest Triassic and became extinct near the end of the Cretaceous. Morphology and geological context indicate adaptation to the open sea.
P. Martin Sander, Tanja Wintrich
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The Nature of the Shoulder Girdle and Clavicular Arch in Sauropterygia [PDF]

Proceedings of the Royal Society, 1892
Abstract The Sauropterygia and Ichthyosauria having formerly been combined in the group termed Nexipoda or Enaliosauria, it has been rather assumed than proved that the bones which form the shoulder girdle in those orders are homologous. The Ichthyosaurian shoulder girdle was well figured by Sir E. Home (‘Phil.
Harry Govier Seeley
exaly   +2 more sources

Postcranial Skeleton of Pistosaurus and Interrelationships of the Sauropterygia (Diapsida)

Zoological Journal of the Linnean Society, 1987
exaly   +2 more sources

The Iberian Triassic fossil record of Sauropterygia: an update

Journal of Iberian Geology, 2020
Members of the aquatic clade of reptiles Sauropterygia quickly evolved and diversified during the Triassic, acquiring different lifestyles and trophic roles with a cosmopolitan distribution. Although the first Triassic sauropterygian remains from the Iberian Peninsula were found more than a century ago, most of the relatively abundant recovered fossils
Carlos de Miguel Chaves, Francisco Ortega, Adán Pérez-García   +2 more
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Phylogeny and Paleobiogeography of Triassic Sauropterygia: Problems Solved and Unresolved

Palaeogeography, Palaeoclimatology, Palaeoecology, 1999
Abstract This comparison of the geographic and stratigraphic distribution of the secondarily marine stem-group sauropterygian reptiles from the Triassic with the phylogenetic relationships within this group indicates an incompleteness of the fossil record for the clade of almost 50%, which limits the reconstruction of the biogeographical history of ...
Olivier Rieppel
exaly   +2 more sources

Decompression syndrome in plesiosaurs (Sauropterygia: Reptilia)

Journal of Vertebrate Paleontology, 2003
Recognition of avascular necrosis through propodial head subsidence in fossils indicates that plesiosaurs were susceptible to decompression syndrome and implies deep, prolonged or repetitive diving behavior for these animals. Contrary to the situation in mosasaurs, plesiosaur vertebrae were not targets of avascular necrosis.
Bruce M. Rothschild, Glenn W. Storrs
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A New Ladinian Nothosauroid (Sauropterygia) From Fuyuan, Yunnan Province, China

Journal of Vertebrate Paleontology, 2020
Brevicaudosaurus jiyangshanensis, gen. et sp. nov., a new nothosauroid, is established on the basis of two nearly complete skeletons from the Middle Triassic (Ladinian) of China. Its skull is diagnostic in having a wide and constricted snout, a large supratemporal fossa slightly larger than the orbit, and a parietal table strongly constricted ...
Qing-Hua Shang
exaly   +2 more sources

On the shoulder girdle in ichthyosauria and sauropterygia

Proceedings of the Royal Society of London, 1893
Abstract In a paper recently communicated to the Royal Society by Pro­fessor H. G. Seeley,* in which is discussed “The Nature of the Shoulder Girdle and Clavicular Arch in Sauropterygia,” the author challenges the validity of statements relating to this girdle made by me at the Anniversary Meeting of the Geological Society of London ...
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über Nothosauria (Sauropterygia, Reptilia) -ein Diskussionsbeitrag

Paläontologische Zeitschrift, 1990
Die Arbeit von K. Tschanz (1989):»Lariosaurus buzzii n. sp. from the Middle Triassic of Monte San Giorgio (Switzerland) with comments on the classification of nothosaurs« wird gepruft, was zu folgenden Ergebnissen fuhrt: 1. Lariosaurus buzzii n. sp. ist kein Lariosaurier, wie Tschanz behauptet.
openaire   +1 more source