American Canyon (UCMP/Stanford): Middle Triassic, Nevada
collected by V. C. Osmont 1902
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Ichthyosauria
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Ichthyosauria indet.
de Blainville 1835
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8 specimens | |||||||||
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Reptilia
- Omphalosauridae
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Omphalosaurus nevadanus n. gen., n. sp.
Merriam 1906
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2 individuals | |||||||||
| UCMP 1019 | ||||||||||
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Reptilia
- Cymbospondylidae
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Cymbospondylus sp.
Leidy 1868
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24 specimens | |||||||||
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Cymbospondylus natans
Merriam 1908
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3 specimens | |||||||||
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Cymbospondylus petrinus
Leidy 1868
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6 specimens | |||||||||
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Reptilia
- Mixosauridae
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Phalarodon fraasi
Merriam 1910
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1 specimen | |||||||||
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Chondrichthyes
- Hybodontiformes
- Acrodontidae
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Acrodus alexandrae
Wemple 1906
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1 specimen | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Nevada | County: | Pershing |
| Coordinates: | 40.1° North, 118.3° West (view map) | ||||
| Paleocoordinates: | 9.7° North, 42.8° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Altitude: | 1402 meters | ||||
| Geographic resolution: | local area |
Time
| Period: | Triassic | Epoch: | Middle Triassic |
| 10 m.y. bin: | Triassic 2 | ||
| Key time interval: | Middle Triassic | ||
| Age range of interval: | 247.20000 - 237.00000 m.y. ago |
Stratigraphy
| Formation: | Prida |
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | "limestone" |
| Includes fossils? | Y |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | good |
| Articulated whole bodies: | many |
| Associated major elements: | many |
| Fragmentation: | occasional |
Collection methods and comments
| Collection methods: | selective quarrying,field collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | UCMP | ||
| Collectors: | V. C. Osmont | Collection dates: | 1902 |
Metadata
| Also known as: | Omphalosaurus nevadanus type site | ||
| Database number: | 34267 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | J. Tennant | Research group: | vertebrate |
| Created: | 2003-08-25 13:04:26 | Last modified: | 2013-05-06 07:46:35 |
| Access level: | the public | Released: | 2003-08-25 13:04:26 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 9007. | 5% 50880 | J. C. Merriam. 1906. Preliminary note on a new marine reptile from the Middle Triassic of Nevada. University of California Publications in Geological Sciences 5(5):71-79 [M. Carrano/M. Carrano/J. Alroy] |
Secondary references:
| 46676 | P. M. Sander. 2000. Ichthyosauria: their diversity, distribution and phylogeny. Palaeontologische Zeitschrift 74(1/2):1-35 [P. Mannion/J. Tennant] |