North Prong Quarry: Middle Pleistocene, Nebraska
collected by Walter Jones and Verne Briggs 1930 - 1932
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Proboscidea
- Elephantidae
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Parelephas columbi
(Falconer 1857)
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| recombined as Mammuthus columbi | ||||||||||
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Archidiskodon imperator
(Leidy 1858)
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| synonym of Mammuthus columbi | ||||||||||
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Mammalia
- Proboscidea
- Gomphotheriidae
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Stegomastodon aftoniae
Osborn 1924
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Mammalia
- Megalonychidae
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Megalonyx sp.
Harlan 1825
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Mammalia
- Perissodactyla
- Equidae
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Equus excelsus
Leidy 1858
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| originally entered as "Equus excelsens" | ||||||||||
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Equus calobatus
(Troxell 1915)
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| synonym of Equus francisci | ||||||||||
| originally entered as "Equus colabatus" | ||||||||||
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Mammalia
- Bovidae
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Symbos convexifrons n. sp.
Barbour 1934
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1 specimen | |||||||||
| synonym of Bootherium bombifrons | ||||||||||
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Mammalia
- Camelidae
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Camelops sp.
Leidy 1854
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Mammalia
- Carnivora
- Felidae
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Metailurus (Pseudaelurus) sp.
Zdansky 1924
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Mammalia
- Carnivora
- Canidae
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Aenocyon sp.
Merriam 1918
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Mammalia
- Lagomorpha
- Leporidae
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Sylvilagus floridanus
(Allen 1890)
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Mammalia
- Rodentia
- Sciuridae
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Citellus sp.
Oken 1816
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| synonym of Spermophilus | ||||||||||
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Mammalia
- Rodentia
- Geomyidae
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Geomys bursarius
(Shaw 1800)
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Geomys lutescens
(Merriam 1890)
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Mammalia
- Rodentia
- Cricetidae
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Microtus sp.
Schrank 1798
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Nebraska | County: | Cherry |
| Coordinates: | 42.1° North, 101.2° West (view map) | ||||
| Paleocoordinates: | 42.1° North, 101.2° West | ||||
| Basis of coordinate: | stated in text | ||||
| Altitude: | 1011 meters | ||||
| Geographic resolution: | small collection |
Time
| Period: | Quaternary | Epoch: | Pleistocene |
| Stage: | Chibanian | 10 m.y. bin: | Cenozoic 6 |
| Key time interval: | Middle Pleistocene | ||
| Age range of interval: | 0.77400 - 0.12900 m.y. ago |
Stratigraphy
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: No details given. Layer described as "about 80 feet above the water level of the North Branch..."
said to be "medial Pleistocene, i.e., Illinoian glacial stage" by Jakway 1961 | |||||
Lithology and environment
| Primary lithology: | sandstone |
| Includes fossils? | Y |
| Lithology description: "a channel sand" according to field notes of Charles Osborne | |
| Environment: | "channel" |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Associated major elements: | some |
| Fragmentation: | occasional |
Collection methods and comments
| Collection methods: | selective quarrying,mechanical,field collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | UNSM | ||
| Collectors: | Walter Jones and Verne Briggs | Collection dates: | 1930 - 1932 |
| Collection method comments: Quarry opened and developed 1930-31 by Jones and Briggs. Field data from 1932 notes of Charles Osborne. | |||
Metadata
| Also known as: | Symbos convexifrons type site; U.N.S.M. Coll. Loc. Cr-10 | ||
| Database number: | 34382 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | J. Alroy | Research group: | vertebrate |
| Created: | 2003-08-28 11:27:54 | Last modified: | 2008-08-06 19:39:14 |
| Access level: | the public | Released: | 2003-08-28 11:27:54 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 9039. | 5% 48400 | E. H. Barbour. 1934. A new ovibovine, Symbos convexifrons, sp. nov. Bulletin of the Nebraska State Museum 1(37):295-298 [M. Carrano/M. Carrano/M. Carrano] |