Rancho La Brisca: Late/Upper Pleistocene, Mexico
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia
- Proboscidea
- Elephantidae
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Mammuthus sp.
Brookes 1828
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2 specimens | |||||||||
Mammalia
- Carnivora
- Procyonidae
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Bassariscus sp.
Coues 1887
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1 specimen | |||||||||
Mammalia
- Perissodactyla
- Equidae
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Equus cf. tau
Owen 1869
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7 specimens | |||||||||
= Equus sp.
Linnaeus 1758
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Alroy 2002 | |||||||||
i.d. based entirely on small size | ||||||||||
Equus sp.
Linnaeus 1758
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1 specimen | |||||||||
large | ||||||||||
Mammalia
- Camelidae
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Camelops sp.
Leidy 1854
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1 specimen | |||||||||
Mammalia
- Cervidae
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Odocoileus hemionus
(Rafinesque 1817)
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1 specimen | |||||||||
Mammalia
- Antilocapridae
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Capromeryx cf. minor
Taylor 1911
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1 specimen | |||||||||
Tetrameryx sp.
Lull 1921
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1 specimen | |||||||||
Mammalia
- Bovidae
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Bison sp.
Hamilton-Smith 1827
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3 specimens | |||||||||
Mammalia
- Rodentia
- Heteromyidae
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Dipodomys sp.
Gray 1841
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1 specimen | |||||||||
Mammalia
- Rodentia
- Cricetidae
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Sigmodon sp.
Say and Ord 1825
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4 specimens | |||||||||
Neotoma sp.
Say and Ord 1825
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1 specimen | |||||||||
Onychomys sp.
Baird 1858
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1 specimen | |||||||||
see common names |
Geography
Country: | Mexico | State/province: | Sonora |
Coordinates: | 29.4° North, 111.0° West (view map) | ||
Paleocoordinates: | 29.4° North, 111.0° West | ||
Basis of coordinate: | based on nearby landmark | ||
Geographic resolution: | small collection |
Time
Period: | Quaternary | Epoch: | Pleistocene |
10 m.y. bin: | Cenozoic 6 | *Local age/stage: | Sangamonian |
Key time interval: | Late/Upper Pleistocene | ||
Age range of interval: | 0.12600 - 0.01170 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Stratigraphy comments: said to be Sangamonian |
Lithology and environment
Environment: | terrestrial indet. |
Glacial or sequence phase: | interglacial |
Taphonomy
Modes of preservation: | body |
Collection methods and comments
Collection size: | 24 specimens |
Taxonomic list comments:screen washed; samples from 5 m mudstone section total mammalian NISP reported as 26, but only 24 are identified said to be Sangamonian based on interglacial aspect of herpetofauna and co-occurrence of Bison with extinct megafauna |
Metadata
Also known as: | UALP 7627 | ||
Database number: | 20633 | ||
Authorizer: | J. Alroy | Enterer: | J. Alroy |
Modifier: | J. Alroy | Research group: | vertebrate |
Created: | 1997-04-12 00:00:00 | Last modified: | 2007-09-17 17:46:40 |
Access level: | the public | Released: | 1997-04-12 00:00:00 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
3477. | T. R. Van Devender, A. M. Rea, and M. L. Smith. 1985. The Sangamon interglacial vertebrate fauna from Rancho la Brisca, Sonora, Mexico. Transactions of the San Diego Society of Natural History 21(2):23-55 [J. Alroy/J. Alroy/J. Marcot] |
Secondary references:
6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] |