Cerros Negros Locality: Middle Pleistocene, Arizona
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
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Deroceras sp.
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Bivalvia
- Cardiida
- Sphaeriidae
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Pisidium sp.
Pfeiffer 1821
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Gastropoda
- Heterostropha
- Succineidae
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Succinea sp.
Draparnaud 1801
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Gastropoda
- Heterostropha
- Vertiginidae
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Vertigo sp.
Muller 1774
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Gastropoda
- Heterostropha
- Gastrocoptidae
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Gastrocopta sp.
Wollaston 1878
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Gastropoda
- Heterostropha
- Planorbidae
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Gyraulus sp.
Charpentier 1837
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Gastropoda
- Heterostropha
- Lymnaeidae
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Fossaria sp.
Westerlund 1885
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Mammalia
- Proboscidea
- Elephantidae
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Mammuthus columbi
(Falconer 1857)
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1 specimen | |||||||||
Manidble containing two molars | ||||||||||
Mammalia
- Proboscidea
- Mammutidae
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Mammut americanum
(Kerr 1792)
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1 specimen | |||||||||
Mandibular tooth & fragments of enamel | ||||||||||
see common names |
Geography
Country: | United States | State/province: | Arizona |
Coordinates: | 32.5° North, 110.6° West (view map) | ||
Paleocoordinates: | 32.5° North, 110.6° West |
Time
Period: | Quaternary | Epoch: | Pleistocene |
10 m.y. bin: | Cenozoic 6 | ||
Key time interval: | Middle Pleistocene | ||
Age range of interval: | 0.78100 - 0.12600 m.y. ago |
Stratigraphy
Lithology and environment
Primary lithology: | massive,pebbly,brown,white lithified conglomeratic,calcareous marl |
Includes fossils? | Y |
Lithology description: A pale-brown, pebble-cobble conglomerate with a calcareous silty matrix and cement is the basal unit (<1 m thick). This basal addition, radiocarbon dates have been established. conglomerate grades upward into a pale-brown silty, clayey marl (±2.5 m thick) overlain by a white, massive marl (±1.5 m) containing lesser amounts of clay than the lower marl. Snails are >96 localities in Arizona (Saunders, 1970; Agenbroad and in the upper 3 m of marls, and the total thickness of 4 m has been dated at 27,000 to 12,000 years before present. | |
Environment: | terrestrial indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Reason for describing collection: | taxonomic analysis |
Metadata
Database number: | 190076 | ||
Authorizer: | M. Uhen | Enterer: | J. So |
Modifier: | J. So | ||
Created: | 2017-11-27 13:57:52 | Last modified: | 2017-11-29 11:22:45 |
Access level: | the public | Released: | 2017-11-27 13:57:52 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
63917. | L. D. Agenbroad, J. I. Mead, C. V. Haynes, Jr. and R. H. Hevly. 2013. Fossil fauna and flora from late Pleistocene Cerros Negros Locality, Pinal County, Arizona: With update of Mammuthus and all Mammut localities from Arizona. 58(1):50-53 [M. Uhen/J. So/M. Uhen] |