A new Lower Triassic ichthyopterygian assemblage from Fossil Hill, Nevada
| Autor: | Neil P. Kelley, Michael J. Orchard, Patrick Embree, Ryosuke Motani |
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| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
010506 paleontology Early Triassic Ichthyosaur lcsh:Medicine Grippia Medical and Health Sciences 010603 evolutionary biology 01 natural sciences General Biochemistry Genetics and Molecular Biology Paleontology stomatognathic system Utatsusaurus Assemblage (archaeology) Ichthyopterygia Marine reptile 0105 earth and related environmental sciences biology Dentition General Neuroscience lcsh:R General Medicine social sciences Biological Sciences biology.organism_classification Triassic Evolutionary Studies humanities stomatognathic diseases General Agricultural and Biological Sciences Nevada |
| Zdroj: | PeerJ, Vol 4, p e1626 (2016) Kelley, NP; Motani, R; Embree, P; & Orchard, MJ. (2016). A new Lower Triassic ichthyopterygian assemblage from Fossil Hill, Nevada. PEERJ, 4, e1626. doi: 10.7717/peerj.1626. UC Davis: Retrieved from: http://www.escholarship.org/uc/item/54w2j4ck PeerJ PeerJ, vol 4 |
| DOI: | 10.7287/peerj.preprints.1447v1 |
| Popis: | We report a new ichthyopterygian assemblage from Lower Triassic horizons of the Prida Formation at Fossil Hill in central Nevada. Although fragmentary, the specimens collected so far document a diverse fauna. One partial jaw exhibits isodont dentition with blunt tipped, mesiodistally compressed crowns and striated enamel. These features are shared with the Early Triassic genusUtatsusaurusknown from coeval deposits in Japan and British Columbia. An additional specimen exhibits a different dentition characterized by relatively small, rounded posterior teeth resembling other Early Triassic ichthyopterygians, particularlyGrippia.This Nevada assemblage marks a southward latitudinal extension for Early Triassic ichthyopterygians along the eastern margin of Panthalassa and indicates repeated trans-hemispheric dispersal events in Early Triassic ichthyopterygians. |
| Databáze: | OpenAIRE |
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