Arroyo Delphin: Messinian, Mexico
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Cetacea
- Kogiidae
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Praekogia cedrosensis n. gen., n. sp.
Barnes 1973
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Reptilia
- Phoenicopteriformes
- Palaelodidae
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| Howard 1971 | |||||||
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Reptilia
- Suliformes
- Sulidae
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Morus sp.
Vieillot 1816
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Howard 1971 | 1 specimen | |||||
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Reptilia
- Charadriiformes
- Alcidae
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| Howard 1971 | |||||||
| see common names | |||||||
Geography
| Country: | Mexico | State/province: | Baja California |
| Coordinates: | 28.4° North, 115.2° West (view map) | ||
| Paleocoordinates: | |||
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| Stage: | Messinian | 10 m.y. bin: | Cenozoic 6 |
| *Period: | Late/Upper Tertiary | *Epoch: | Early/Lower Pliocene |
| Key time interval: | Messinian | ||
| Age range of interval: | 7.246 - 5.333 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Almejas | Member: | lower | ||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: An ochre-yellow sand designated as unit O in Richard H. Tedford's field notes of 1965. Horizon is about 6 feet stratigraphically below the first and lowest prominent pebble conglomerate in the Almejas Formation exposed at locality UCR RV-7315. | |||||
Lithology and environment
| Primary lithology: | yellow poorly lithified sandstone |
| Secondary lithology: | pebbly conglomerate |
| Includes fossils? | Y |
| Lithology description: an ocre-yellow sand | |
| Environment: | coastal indet. |
Taphonomy
| Modes of preservation: | body,original phosphate |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | good |
| Articulated whole bodies: | none |
| Associated major elements: | some |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | selective quarrying,surface (in situ),mechanical,field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Also known as: | UCR RV-7315 | ||
| Database number: | 13090 | ||
| Authorizer: | M. Uhen | Enterer: | M. Uhen |
| Modifier: | M. Uhen | Research group: | vertebrate |
| Created: | 2002-01-21 07:02:09 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2002-01-21 07:02:09 |
| Creative Commons license: | CC0 | ||
Reference information
Primary reference:
| 4361. | 5% 30460 | L. G. Barnes. 1973. Praekogia cedrosensis, a new genus and species of fossil pygymy sperm whale from Isla Cedros Baja California, Mexico. Contributions in Science, Natural History Museum of Los Angeles County 247:1-20 [M. Uhen/M. Uhen/M. Uhen] |
Secondary references:
| 12691 | L. G. Barnes. 1998. The sequence of fossil marine mammal assemblages in Mexico. Avances en investigacion 1 [M. Uhen/M. Uhen/M. Uhen] | |
| 38651 | H. Howard. 1971. Pliocene avian remains from Baja California. Contributions in Science Los Angeles County Museum 217:1-17 [M. Uhen/M. Uhen] |