CAS Loc. 39407, Isla Cerralvo: Pliocene, Mexico
collected by Hanna & Durham
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Parona sp.
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Echinoidea
- Spatangoida
- Brissidae
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Meoma sp.
Gray 1851
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Bivalvia
- Pectinida
- Spondylidae
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Spondylus princeps
Broderip 1833
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Anthozoa
- Scleractinia
- Poritidae
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Porites sp.
Link 1807
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| see common names | |||||||
Geography
| Country: | Mexico | State/province: | Baja California Sur |
| Coordinates: | 24.3° North, 109.9° West (view map) | ||
| Paleocoordinates: | 24.1° North, 108.6° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Pliocene |
| 10 m.y. bin: | Cenozoic 6 | ||
| Key time interval: | Pliocene | ||
| Age range of interval: | 5.33300 - 2.58000 m.y. ago |
Stratigraphy
| Local section: | Isla Cerralvo | Local bed: | 160 ft | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From unknown lithostratigraphic unit, which is an inlier, unconformably in contact with granites and metamorphics. AGE: Middle Pliocene, on the basis of macrofossil biostratigraphy. STRATIGRAPHIC POSITION: From 160 feet above base of section. | |||||
Lithology and environment
| Primary lithology: | poorly lithified siltstone |
| Secondary lithology: | poorly lithified sandstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Silty and sandy beds. LITHIFICATION: Poorly-lithified, on the basis of comments in text. | |
| Environment: | coastal indet. |
Taphonomy
| Modes of preservation: | body,original calcite |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (in situ),field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | CAS |
| Collectors: | Hanna & Durham |
| Collection method comments: COLLECTORS: Hanna & Durham. REPOSITORY: CAS | |
| Taxonomic list comments:COVERAGE: Exhaustive for molluscs; whale bones mentioned but not identified. NOMENCLATURE: Authoritative publication, with somewhat antiquated nomenclature, but with species-resolution identifications. | |
Metadata
| Database number: | 96583 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2010-06-13 11:49:07 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2010-06-13 11:49:07 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 32782. | L. G. Hertlein. 1966. Pliocene fossils from Rancho El Refugio, Baja California and Cerralvo Island, Mexico. Proceedings of the California Academy of Sciences 30(14):265-284 [A. Hendy/A. Hendy] |