A new Lower Triassic ichthyopterygian assemblage from Fossil Hill, Nevada
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 crow...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
PeerJ Inc.
2016-01-01
|
Series: | PeerJ |
Subjects: | |
Online Access: | https://peerj.com/articles/1626.pdf |
id |
doaj-04a49378b3f444c8a702bcb090dc3609 |
---|---|
record_format |
Article |
spelling |
doaj-04a49378b3f444c8a702bcb090dc36092020-11-24T21:10:50ZengPeerJ Inc.PeerJ2167-83592016-01-014e162610.7717/peerj.1626A new Lower Triassic ichthyopterygian assemblage from Fossil Hill, NevadaNeil P. Kelley0Ryosuke Motani1Patrick Embree2Michael J. Orchard3Department of Paleobiology, National Museum of Natural History, Smithsonian, Washington, District of Columbia, United StatesDepartment of Earth and Planetary Sciences, University of California, Davis, Davis, California, United StatesOrangevale, California, United StatesNatural Resources Canada–Geological Survey of Canada, Vancouver, British Columbia, CanadaWe 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 genus Utatsusaurus known 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, particularly Grippia. 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.https://peerj.com/articles/1626.pdfTriassicIchthyosaurIchthyopterygiaMarine reptileNevada |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Neil P. Kelley Ryosuke Motani Patrick Embree Michael J. Orchard |
spellingShingle |
Neil P. Kelley Ryosuke Motani Patrick Embree Michael J. Orchard A new Lower Triassic ichthyopterygian assemblage from Fossil Hill, Nevada PeerJ Triassic Ichthyosaur Ichthyopterygia Marine reptile Nevada |
author_facet |
Neil P. Kelley Ryosuke Motani Patrick Embree Michael J. Orchard |
author_sort |
Neil P. Kelley |
title |
A new Lower Triassic ichthyopterygian assemblage from Fossil Hill, Nevada |
title_short |
A new Lower Triassic ichthyopterygian assemblage from Fossil Hill, Nevada |
title_full |
A new Lower Triassic ichthyopterygian assemblage from Fossil Hill, Nevada |
title_fullStr |
A new Lower Triassic ichthyopterygian assemblage from Fossil Hill, Nevada |
title_full_unstemmed |
A new Lower Triassic ichthyopterygian assemblage from Fossil Hill, Nevada |
title_sort |
new lower triassic ichthyopterygian assemblage from fossil hill, nevada |
publisher |
PeerJ Inc. |
series |
PeerJ |
issn |
2167-8359 |
publishDate |
2016-01-01 |
description |
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 genus Utatsusaurus known 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, particularly Grippia. 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. |
topic |
Triassic Ichthyosaur Ichthyopterygia Marine reptile Nevada |
url |
https://peerj.com/articles/1626.pdf |
work_keys_str_mv |
AT neilpkelley anewlowertriassicichthyopterygianassemblagefromfossilhillnevada AT ryosukemotani anewlowertriassicichthyopterygianassemblagefromfossilhillnevada AT patrickembree anewlowertriassicichthyopterygianassemblagefromfossilhillnevada AT michaeljorchard anewlowertriassicichthyopterygianassemblagefromfossilhillnevada AT neilpkelley newlowertriassicichthyopterygianassemblagefromfossilhillnevada AT ryosukemotani newlowertriassicichthyopterygianassemblagefromfossilhillnevada AT patrickembree newlowertriassicichthyopterygianassemblagefromfossilhillnevada AT michaeljorchard newlowertriassicichthyopterygianassemblagefromfossilhillnevada |
_version_ |
1716754979722625024 |