B-1394, Punta La Cholla: Late/Upper Pleistocene, Mexico
collected by Emerson & Loring 1954
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Echinoidea
- Clypeasteroida
- Mellitidae
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Encope sp.
Agassiz 1840
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Bivalvia
- Cardiida
- Cardiidae
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Cardium elatum
Sowerby I 1833
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| recombined as Laevicardium elatum | ||||||||||
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Cardium procerum
Sowerby 1833
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| recombined as Mexicardia procera | ||||||||||
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Bivalvia
- Cardiida
- Solecurtidae
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Tagelus californianus
(Conrad 1837)
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| recombined as Tagelus (Tagelus) californianus | ||||||||||
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Bivalvia
- Cardiida
- Veneridae
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Chione californiensis
(Broderip and Sowerby I 1835)
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Gastropoda
- Turritellidae
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Turritella gonostoma
Valenciennes 1832
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Gastropoda
- Naticidae
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Polinices humboldi
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Polinices uber
(Valenciennes 1821)
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Gastropoda
- Neogastropoda
- Muricidae
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Murex radix
Gmelin 1791
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| SUBSPECIES: Murex radix nigritus | ||||||||||
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= Muricanthus nigritus
Philippi 1845
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Keen 1971 | |||||||||
| see common names | ||||||||||
Geography
| Country: | Mexico | State/province: | Sonora |
| Coordinates: | 31.3° North, 113.6° West (view map) | ||
| Paleocoordinates: | 31.3° North, 113.5° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | outcrop |
Time
| Period: | Quaternary | Epoch: | Pleistocene |
| Stage: | Late/Upper Pleistocene | 10 m.y. bin: | Cenozoic 6 |
| Key time interval: | Late/Upper Pleistocene | ||
| Age range of interval: | 0.12900 - 0.01170 m.y. ago |
Stratigraphy
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From an unknown lithostratigraphic unit, which unconformably overlies granitic rocks. AGE: Late Pleistocene, on the basis of molluscan biostratigraphy. STRATIGRAPHIC POSITION: From isolated ledges of well-indurated fossiliferous sandstone containing granitic pebbles and rocks overlying granitic rocks. | |||||
Lithology and environment
| Primary lithology: | pebbly,shelly/skeletal lithified sandstone |
| Lithology description: SPECIFIC LITHOLOGY: Well-indurated fossiliferous sandstone containing granitic pebbles. LITHIFICATION: Lithified, on the basis of facies description. | |
| Environment: | coastal indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | Emerson & Loring | Collection dates: | 1954 |
| Collection method comments: COLLECTOR: W. K. Emerson and A. P. Loring, 1954. REPOSITORY: Unknown, possible SDNHM. | |||
| Taxonomic list comments:COVERAGE: Not an authoritative publication, with somewhat antiquated nomenclature, but with species-resolution identifications | |||
Metadata
| Database number: | 96556 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2010-06-12 12:01:32 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2010-06-12 12:01:32 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 32777. | L. G. Hertlein. 1956. Marine Pleistocene Invertebrates from near Puerto Penasco, Sonora, Mexico. Transactions of the San Diego Society of Natural History 12(8):154-176 [A. Hendy/A. Hendy] |
Secondary references:
| 32800 | A. M. Keen. 1971. Sea Shells of Tropical West America 1-1064 [A. Hendy/A. Hendy] |