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On the presence of Mixosaurus (Ichthyopterygia: Reptilia) in the Middle Triassic of Nevada

Published online by Cambridge University Press:  20 May 2016

P. Martin Sander
Affiliation:
Paläontologisches Institut und Museum, Universität Zürich, Künstlergasse 16, CH-8006 Zurich, Switzerland
Hugo Bucher
Affiliation:
Institut de Géologie et Paléontologie, Université de Lausanne BFSH-2, CH-1015 Lausanne, Switzerland

Extract

The small ichthyosaur Mixosaurus is the most widely distributed ichthyosaur. It is known from Lower Triassic rocks of British Columbia, Canada (Callaway and Brinkman, 1989), and Middle Triassic rocks of northwestern North America (Alaska, British Columbia), China, Timor, the western Tethys (Switzerland, Italy, Turkey), the Germanic Triassic, and the high Arctic (Spitsbergen, Exmouth Island) (Mazin, 1986; Callaway and Brinkman, 1989; Callaway and Massare, 1989). The presence of Mixosaurus in one of the richest ichthyosaur provinces, the Middle Triassic of Nevada (Merriam, 1908), has been difficult to establish. The history of this problem is very colorful and is the topic of this note together with the description of a new specimen from the Nevada Middle Triassic.

Type
Paleontological Notes
Copyright
Copyright © The Paleontological Society 

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References

Baur, G. 1887. On the morphology and origin of the Ichthyopterygia. American Naturalist, 21:837840.Google Scholar
Blainville, H. M. D. de. 1835. Systéme d'Herpétologie. Nouvelles annales du Muséum (national) d'histoire naturelle, Paris, 4.Google Scholar
Callaway, J. M., and Brinkman, D. B. 1989. Ichthyosaurs (Reptilia, Ichthyosauria) from the Lower and Middle Triassic Sulphur Mountain Formation, Wapiti Lake area, British Columbia, Canada. Canadian Journal of Earth Sciences, 126:14911500.Google Scholar
Callaway, J. M., and Massare, J. A. 1989. Geographic and stratigraphic distribution of the Triassic Ichthyosauria (Reptilia; Diapsida). Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 178:3758.Google Scholar
Carroll, R. L. 1987. Vertebrate Paleontology and Evolution. W. H. Freeman, New York, 698 p.Google Scholar
Cox, C. B., and Smith, D. G. 1973. A review of the Triassic vertebrate faunas of Svalbard. Geological Magazine, 110:405418.Google Scholar
Huene, F. von 1916. Beiträge zur Kenntnis der Ichthyosaurier im deutschen Muschelkalk. Palaeontographica, 62:168.Google Scholar
Huene, F. von 1956. Paläontologie und Phylogenie der Niederen Tetrapoden. VEB Gustav Fischer Verlag, Jena, 716 p.Google Scholar
Linnaeus, C. von 1758. Systema Naturae. Regnum Animale. 10th ed. L. Salvii, Holmiae, 824 p.Google Scholar
Mazin, J. M. 1983. L'implantation dentaire chez les Ichthyopterygia (Reptilia). Neues Jahrbuch für Geologie und Paläontologie, Monatshefte, 1983/7:406418.CrossRefGoogle Scholar
Mazin, J. M. 1984. Les Ichthyopterygia du Trias du Spitsberg. Descriptions complémentaires a partir d'un nouveau matérial. Bulletin du Muséum national d'Histoire naturelle, Series 4, Vol. 6, Section C:309320.Google Scholar
Mazin, J. M. 1986. Paleobiogeography of Triassic ichthyopterygian reptiles; some working hypotheses. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 173:117129.Google Scholar
McGowan, C. 1972. Evolutionary trends in longipinnate ichthyosaurs with particular reference to skull and fore fin. Life Science Contributions, Royal Ontario Museum, 83:138.Google Scholar
Merriam, J. C. 1908. Triassic Ichthyosauria, with special reference to the American forms. Memoirs of the University of California, 1, 1:1196.Google Scholar
Merriam, J. C. 1910. The skull and dentiton of a primitive ichthyosaurian from the Middle Triassic. University of California Publications, Geology, 5:381390.Google Scholar
Merriam, J. C. 1911. Notes on the relationships of the marine saurian fauna described from the Triassic of Spitzbergen by Wiman. University of California Publications, Geology, 6:317327.Google Scholar
Nichols, K. M., and Silberling, N. J. 1977. Stratigraphy and depositional history of the Star Peak Group (Triassic), northwestern Nevada. Geological Society of America, Special Paper 178, 73 p.CrossRefGoogle Scholar
Repossi, E. 1902. Il mixosauro del strati triasici di Besano in Lombardia. Atti della Societa italiana di Scienza naturali, 41:361372.Google Scholar
Romer, R. S. 1956. Osteology of the Reptiles. University of Chicago Press, Chicago, 772 p.Google Scholar
Silberling, N. J., and Nichols, K. M. 1982. Middle Triassic molluscan fossils of biostratigraphic significance from the Humboldt Range, northwestern Nevada. United States Geological Survey Professional Paper 592, 77 p.Google Scholar
Wiman, C. 1910. Ichthyosaurier aus der Trias Spitzbergens. Bulletin of the Geological Institute, Upsala, 10:124148.Google Scholar
Wiman, C. 1916. Notes on the marine Triassic reptile fauna of Spitzbergen. University of California Publications, Geology, 10:6373.Google Scholar