DV 1442-1 [Otuma Fm]: Early Oligocene, Peru
collected by DeVries
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Gastropoda
- Turritellidae
|
|||||||
|
Cristispira cochleiformis
(Gabb 1869)
|
|||||||
|
Turritella chira
Olsson 1928
|
|||||||
| see common names | |||||||
Geography
| Country: | Peru |
| Coordinates: | 14.5° South, 76.0° West (view map) |
| Paleocoordinates: | 16.6° South, 69.2° West |
| Basis of coordinate: | stated in text |
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Oligocene |
| Stage: | Rupelian | 10 m.y. bin: | Cenozoic 4 |
| Key time interval: | Early Oligocene | ||
| Age range of interval: | 33.9 - 27.82 m.y. ago |
Stratigraphy
| Formation: | Otuma | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Otuma Fm, which regionally is unconformably overlain by the Prisco Fm (late Early Miocene to Late Pliocene). AGE: Eocene/Oligocene in text, on the basis of K/Ar dates, siliceous microfossil zonation, and molluscan biostratigraphy. Here assigned to Early Oligocene consistent with other collections from formation. STRATIGRAPHIC POSITION: From sandstone beds in unknown part of formation. | |||||
Lithology and environment
| Primary lithology: | lithified sandstone |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Indurated sandstone. LITHIFICATION: Lithified, based on facies description. | |
| Environment: | coastal indet. |
| Geology comments: ENVIRONMENT: Not discussed in text, but appears to be from relatively shallow marine siliciclastic setting. | |
Taphonomy
| Modes of preservation: | body,original aragonite |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some genera,some macrofossils |
| Collection methods: | surface (in situ),field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | UWBM |
| Collectors: | DeVries |
| Collection method comments: COLLECTOR: DeVries. REPOSITORY: UWMB, Washington. | |
| Taxonomic list comments:COVERAGE: Limited to taxon described in publication, and supporting publications NOMENCLATURE: Authoritative publication, with modern nomenclature, and species-resolution taxonomic assignments. | |
Metadata
| Database number: | 80461 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2008-04-20 21:11:09 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2008-04-20 21:11:09 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 27057. | T. J. DeVries. 2007. Cenozoic Turritellidae (Gastropoda) from southern Peru. Journal of Paleontology 81(2):331-351 [A. Hendy/A. Hendy] |