Bear Springs: Blancan, Arizona
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Proboscidea
- Gomphotheriidae
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Cuvieronius sp.
Osborn 1923
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= Gomphotheriidae indet.
Hay 1922
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Alroy 2002 | ||||||
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? Rhynchotherium sp.
Falconer 1868
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Mammalia
- Carnivora
- Felidae
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? Felis sp.
Linnaeus 1758
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= Felinae indet.
Trouessart 1885
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Alroy 2002 | ||||||
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Mammalia
- Carnivora
- Mustelidae
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Trigonictis macrodon
(Cope 1868)
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Mammalia
- Camelidae
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Hemiauchenia sp.
Gervais and Ameghino 1880
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Camelops sp.
Leidy 1854
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Mammalia
- Tayassuidae
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Platygonus sp.
Leconte 1848
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Mammalia
- Antilocapridae
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Antilocapridae indet.
Gray 1866
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Mammalia
- Perissodactyla
- Equidae
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Equus sp.
Linnaeus 1758
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Nannippus phlegon
(Hay 1899)
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= Nannippus peninsulatus
Cope 1885
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Alroy 2002 | ||||||
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Mammalia
- Rodentia
- Geomyidae
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Geomys sp.
Rafinesque 1817
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Mammalia
- Rodentia
- Cricetidae
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Sigmodon sp.
Say and Ord 1825
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Arizona | County: | Graham |
| Coordinates: | 32.8° North, 110.0° West (view map) | ||||
| Paleocoordinates: | 33.0° North, 109.4° West | ||||
| Basis of coordinate: | stated in text | ||||
| Geographic resolution: | outcrop |
Time
| 10 m.y. bin: | Cenozoic 6 | ||
| *Period: | Late/Upper Tertiary | *Epoch: | Pliocene | *Local age/stage: | Blancan |
| Key time interval: | Blancan | ||
| Age range of interval: | 4.70000 - 1.40000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Gila Conglomerate | ||||
| Stratigraphic resolution: | member | ||||
| Stratigraphy comments: mostly from 4 localities within 10 m of section; additional locality about 10 m upsection | |||||
Lithology and environment
| Primary lithology: | sandstone |
| Secondary lithology: | claystone |
| Environment: | fluvial indet. |
| Geology comments: said to be from the "silt and sand facies," but most fossil collections are shown in sandstone or claystone horizons said to be from "alluvial fan" deposits | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,mesofossils |
| Disassociated minor elements: | many |
Collection methods and comments
| Collection methods: | bulk,surface (float),sieve |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 19651 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy |
| Modifier: | J. Alroy | Research group: | vertebrate |
| Created: | 1993-02-18 00:00:00 | Last modified: | 2002-09-25 21:07:00 |
| Access level: | the public | Released: | 1993-02-18 00:00:00 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 6199. | 5% 23340 | Y. Tomida. 1987. Small mammal fossils and correlation of continental deposits, Safford and Duncan basins, Arizona. National Science Museum 1-141 [J. Alroy/J. Alroy/J. Alroy] |
Secondary references:
| 6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] |