Pliohippus Draw (The Pits): Hemphillian, Nebraska
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Perissodactyla
- Equidae
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Hipparion cf. eurystyle
(Cope 1893)
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= Neohipparion sp.
Gidley 1903
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Alroy 2002 | |||||||||
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Dinohippus leidyanus
(Osborn 1918)
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Mammalia
- Tayassuidae
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Platygonus pollenae n. sp.
Prothero and Grenader 2012
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Prothero and Grenader 2012 | |||||||||
| synonym of Platygonus brachirostris | ||||||||||
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Mammalia
- Antilocapridae
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Texoceros altidens
(Matthew 1924)
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| from lower Johnson Mbr. in "Pliohippus Draw"; said to be "S. of Pliohippus Draw" by Frick 1937 | ||||||||||
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Mammalia
- Palaeomerycidae
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Dromomerycinae indet.
(Frick 1937)
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Frick 1937 | |||||||||
| Frick (p.83) lists this specimen from "'The Pits' S. of Pliohippus Draw" under Cranioceras unicornis, but states "probably generically distinct" | ||||||||||
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Mammalia
- Bovidae
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Neotragocerus improvisus
Matthew and Cook 1909
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| from lower Johnson Mbr. in "Pliohippus Draw" | ||||||||||
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Mammalia
- Carnivora
- Canidae
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Aelurodon taxoides
Hatcher 1894
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Wang et al. 1999 | |||||||||
| "East fork of Pliohippus Draw... middle Hipparion Affine Channel"; also "Ashbrook Pasture... Hipparion Affine Channel" and specimen from "Pliohippus Draw, Snake Creek Quarry" thought to be reworked from the Laucomer Member; however, only the Johnson Member is exposed in this area | ||||||||||
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Epicyon haydeni
(Leidy 1858)
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Wang et al. 1999 | |||||||||
| "'The Pits,' south of Pliohippus Draw"; "Pliohippus Draw, Snake Creek Quarry" | ||||||||||
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Epicyon saevus
(Leidy 1858)
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Wang et al. 1999 | |||||||||
| "'The Pits' south of Pliohippus Draw"; also "Sand channel, West Draw" | ||||||||||
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Mammalia
- Rodentia
- Castoridae
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Castor cf. californicus
Kellogg 1911
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| described by Stirton 1935 | ||||||||||
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Dipoides sp.
Jaeger 1835
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= Dipoides cf. wilsoni
Hibbard 1949
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Shotwell 1955 | |||||||||
| described by Stirton 1935; I believe Skinner et al. were not aware of this reidentification | ||||||||||
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Mammalia
- Megalonychidae
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Megalonyx curvidens
Matthew 1924
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Mammalia
- Proboscidea
- Mammutidae
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Pliomastodon matthewi
(Osborn 1921)
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| recombined as Mammut matthewi | ||||||||||
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Mammalia
- Proboscidea
- Gomphotheriidae
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Serridentinus nebrascensis
Osborn 1924
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= Gomphotherium sp.
Burmeister 1837
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Alroy 2002 | |||||||||
| and "S. anguirvalis" | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Nebraska | County: | Sioux |
| Coordinates: | 42.4° North, 103.8° West (view map) | ||||
| Paleocoordinates: | 42.7° North, 102.1° West | ||||
| Basis of coordinate: | based on political unit |
Time
| Period: | Neogene | ||
| 10 m.y. bin: | Cenozoic 6 | ||
| *Period: | Tertiary | *Epoch: | Miocene |
| Key time interval: | Hemphillian | ||
| Age range of interval: | 9.40000 - 4.70000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Snake Creek | Member: | Johnson |
| Local section: | Snake | Local bed: | 8 |
| Local order: | bottom to top |
Lithology and environment
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Also known as: | Quarry 5; South of Pliohippus Draw | ||
| Database number: | 18323 | ||
| Authorizer: | J. Alroy, J. Marcot | Enterer: | J. Alroy, J. Marcot |
| Modifier: | J. Alroy | Research group: | vertebrate |
| Created: | 1994-04-30 00:00:00 | Last modified: | 2007-08-19 13:40:49 |
| Access level: | the public | Released: | 1994-04-30 00:00:00 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 3175. | M. F. Skinner, S. M. Skinner, and R. J. Gooris. 1977. Stratigraphy and biostratigraphy of late Cenozoic deposits in central Sioux County, western Nebraska. Bulletin of the American Museum of Natural History 158(5):263-370 [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] | |
| 6222 | C. Frick. 1937. Horned ruminants of North America. Bulletin of the American Museum of Natural History 69:1-669 [J. Alroy/J. Alroy/M. Uhen] | |
| 59118 | J. Leidy. 1858. Notice of Remains of Extinct Vertebrata, from the Valley of the Niobrara River, Collected during the Exploring Expedition of 1857, in Nebraska, under the Command of Lieut. G. K. Warren, U. S. Top. Eng., by Dr. F. V. Hayden, Geologist to the Expedition. Proceedings of the Academy of Natural Sciences of Philadelphia 10:15-89 [J. Marcot/J. Marcot] | |
| 51449 | D. R. Prothero and J. Grenader. 2012. A New Primitive Species of the Flat-Headed Peccary Platygonus (Tayassuidae, Artiodactyla, Mammalia) from the Late Miocene of the High Plains. Journal of Paleontology 86(6):1021-1031 [J. Marcot/J. Marcot] | |
| 3108 | J. A. Shotwell. 1955. Review of the Pliocene Beaver Dipoides. Journal of Paleontology 29(1):129-144 [J. Alroy/J. Alroy/J. Ju] | |
| 3558 | X. Wang, R. H. Tedford, and B. E. Taylor. 1999. Phylogenetic systematics of the Borophaginae (Carnivora: Canidae). Bulletin of the American Museum of Natural History 243:1-392 [J. Alroy/J. Alroy/J. Alroy] |