Sisters Rocks: Tithonian, Oregon
collected by Norman V. Peterson 1961
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Ichthyosauridae
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| 1 specimen | ||||||||||
| Rostrum | ||||||||||
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Bivalvia
- Pectinida
- Buchiidae
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Oregon | County: | Curry |
| Coordinates: | 42.6° North, 124.4° West (view map) | ||||
| Paleocoordinates: | 32.2° North, 57.2° West (Wright 2013) | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | small collection |
Time
| Period: | Jurassic | Epoch: | Late Jurassic |
| Stage: | Tithonian | 10 m.y. bin: | Jurassic 6 |
| Key time interval: | Tithonian | ||
| Age range of interval: | 149.2 - 143.1 m.y. ago |
Stratigraphy
| Formation: | Otter Point | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: "latest Jurassic (Portlandian-Purbeckian)" | |||||
Lithology and environment
| Primary lithology: | gray metamorphosed mudstone |
| Secondary lithology: | lithified sandy wackestone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: "markedly deformed dark gray mudstones and interstratified turbidite-type graywacke sandstones." | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Spatial orientation: | random |
| Preservation of anatomical detail: | medium |
| Abundance in sediment: | rare |
| Fragmentation: | frequent |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection excludes: | some macrofossils | ||
| Collection size: | 1 specimens | ||
| Reason for describing collection: | general faunal/floral analysis | ||
| Collectors: | Norman V. Peterson | Collection dates: | 1961 |
Metadata
| Database number: | 102275 | ||
| Authorizer: | M. Carrano | Enterer: | H. Street |
| Modifier: | J. Tennant | Research group: | vertebrate |
| Created: | 2011-01-12 08:08:07 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2011-01-12 08:08:07 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 34741. | C. L. Camp and J. G. Koch. 1966. Late Jurassic ichthyosaur from coastal Oregon. Journal of Paleontology 40(1):204-205 [M. Carrano/H. Street] |
Secondary references:
| 35950 | ETE | J. G. Koch and C. L. Camp. 1966. Late Jurassic ichthyosaur from Sisters Rocks coastal southwestern Oregon. The Ore Bin 28(3):65-68 [M. Carrano/H. Street] |
| 45374 | W. N. Orr and K. T. Katsura. 1985. Oregon's oldest vertebrates [Ichthyosauria(Reptilia)]. Oregon Geology 47(7):75-77 [P. Mannion/J. Tennant] |