4.8 km WSW of Fruita, FPA: Kimmeridgian - Tithonian, Colorado
collected by G. Callison, J. M. Clark 1976
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Sphenodontidae
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Rhynchocephalia indet.
Günther 1867
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1 specimen | |||||||||
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= Eilenodon robustus n. gen., n. sp.
Rasmussen and Callison 1981
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Rasmussen and Callison 1981 | |||||||||
| Holotype LACM 120462 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Colorado |
| Coordinates: | 39.1° North, 108.8° West (view map) | ||
| Paleocoordinates: | 35.2° North, 55.4° West | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | small collection |
Time
| Period: | Jurassic | Epoch: | Late Jurassic |
| Stage: | Kimmeridgian - Tithonian | 10 m.y. bin: | Jurassic 5 - Jurassic 6 |
| Key time interval: | Kimmeridgian - Tithonian | ||
| Age range of interval: | 154.8 - 145 m.y. ago |
Lithology and environment
| Primary lithology: | green argillaceous,sandy siltstone |
| Includes fossils? | Y |
| Lithology description: At the FPA, the Morrison Formation is represented by an alluvial deposit consisting mainly of pale green, sandy siltstones and clays that are accompanied by pale red silts and buff sands. Channel deposits are characteristic of the Salt Wash Member. | |
| Environment: | alluvial fan |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (float),surface (in situ),mechanical,survey of museum collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | LACM | ||
| Collectors: | G. Callison, J. M. Clark | Collection dates: | 1976 |
| Collection method comments: The fossil was collected by James M. Clark, at the time a student at California State University, Long Beach, while conducting a surface survey of the area.
The material was prepared with the use of an S.S. White Industrial Airabrasive Unit filled with powdered dolomite | |||
Metadata
| Also known as: | Opal Hill | ||
| Database number: | 137733 | ||
| Authorizer: | R. Benson, M. Carrano | Enterer: | R. Benson, M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2012-12-18 22:37:27 | Last modified: | 2017-11-09 17:15:02 |
| Access level: | the public | Released: | 2012-12-18 22:37:27 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 63779. | Anonymous. 1977. The Fruita Paleontological Report 1-82 [M. Carrano/M. Carrano] |
Secondary references:
| 44030 | T. E. Rasmussen and G. Callison. 1981. A new herbivorous sphenodontid (Rhynchocephalia: Reptilia) from the Jurassic of Colorado. Journal of Paleontology 55(5):1109-1116 [R. Benson/R. Benson/M. Carrano] |