Cottonwood Canyon: Middle Triassic, Nevada
collected by H. M. Evans 1904
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Reptilia
- Cymbospondylidae
|
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Cymbospondylus petrinus
Leidy 1868
|
1 specimen | |||||||||
| referral tentative | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Nevada | County: | Pershing |
| Coordinates: | 40.4° North, 118.1° West (view map) | ||||
| Paleocoordinates: | 9.8° North, 42.5° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | small collection |
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
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | "limestone" |
| Environment: | carbonate indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | good |
| Abundance in sediment: | rare |
| Fragmentation: | occasional |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | survey of museum collection | ||
| Collection size: | 1 specimens | ||
| Reason for describing collection: | general faunal/floral analysis | ||
| Collectors: | H. M. Evans | Collection dates: | 1904 |
Metadata
| Database number: | 107398 | ||
| Authorizer: | M. Carrano | Enterer: | H. Street |
| Modifier: | J. Marcot | Research group: | vertebrate |
| Created: | 2011-04-07 06:00:00 | Last modified: | 2023-04-11 14:34:59 |
| Access level: | the public | Released: | 2011-04-07 06:00:00 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 35747. | ETE | J. C. Merriam. 1905. A primitive ichthyosaurian limb from the Middle Triassic of Nevada. University of California Publications, Bulletin of the Department of Geological Sciences 4(2):33-38 [M. Carrano/H. Street/M. Carrano] |
Secondary references:
| 46676 | P. M. Sander. 2000. Ichthyosauria: their diversity, distribution and phylogeny. Palaeontologische Zeitschrift 74(1/2):1-35 [P. Mannion/J. Tennant] |