Rabbit Graveyard (Lower): Orellan, Nebraska
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia
- Creodonta
- Hyaenodontidae
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Hyaenodon crucians
Leidy 1853
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Mammalia
- Carnivora
- Amphicyonidae
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Daphoenus sp.
Leidy 1853
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Hunt 1998 | |||||||||
"Orella Member... 2.5 miles N of Chadron" | ||||||||||
Mammalia
- Carnivora
- Canidae
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Hesperocyon gregarius
(Cope 1873)
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surely includes specimen of Wang 1994 from Bartlet Ranch, 2 mi N of Chadron, 120 ft above Blue Ash, Orellan | ||||||||||
Mammalia
- Perissodactyla
- Equidae
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Mesohippus bairdi
(Leidy 1850)
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Mammalia
- Perissodactyla
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Rhinocerotoidea indet.
Gray 1821
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"larger rhino", hyracodontid or rhinocerotid | ||||||||||
Mammalia
- Perissodactyla
- Hyracodontidae
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Hyracodon nebraskensis
(Leidy 1850)
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Mammalia
- Camelidae
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Poebrotherium wilsoni
Leidy 1847
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Mammalia
- Merycoidodontidae
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Merycoidodon sp.
Leidy 1848
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Platyochoerus heartensis
Schultz and Falkenbach 1956
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= Miniochoerus starkensis
Schultz and Falkenbach 1956
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Schultz and Falkenbach 1956 | |||||||||
UNSM Dw-104, Brule Zone B; based on sections of Gustafson 1986a, "Lumpy level" is not present in this area, but "Green marker level" or equivalents may be | ||||||||||
Mammalia
- Hypertragulidae
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Hypertragulus calcaratus
(Cope 1873)
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Mammalia
- Leptomerycidae
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Leptomeryx sp.
Leidy 1853
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large | ||||||||||
Leptomeryx evansi
Leidy 1853
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probably includes type of "L. exilis" Cook 1934 from "Brule (Middle Oligocene) beds, about two miles north of Chadron" | ||||||||||
Mammalia
- Rodentia
- Ischyromyidae
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Ischyromys typus
Leidy 1856
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Mammalia
- Rodentia
- Castoridae
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Agnotocastor readingi n. sp.
Korth 1988
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Korth 1988 | |||||||||
CSC-80; "A. praetereadens" | ||||||||||
Mammalia
- Rodentia
- Eutypomyidae
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Eutypomys thomsoni
Matthew 1905
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Mammalia
- Rodentia
- Heliscomyidae
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Heliscomys hatcheri
Wood 1935
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Mammalia
- Rodentia
- Eomyidae
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Paradjidaumo trilophus
(Cope 1873)
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recombined as Adjidaumo trilophus | ||||||||||
Adjidaumo minutus
(Cope 1873)
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Mammalia
- Rodentia
- Cricetidae
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Eumys elegans
Leidy 1856
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Mammalia
- Lagomorpha
- Leporidae
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Megalagus turgidus
(Cope 1873)
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Palaeolagus haydeni
Leidy 1856
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Mammalia
- Didelphimorphia
- Didelphidae
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Peratherium sp.
Aymard 1850
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= Didelphidae indet.
Gray 1821
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Alroy 2002 | |||||||||
see common names |
Geography
Country: | United States | State/province: | Nebraska | County: | Dawes |
Coordinates: | 42.8° North, 103.1° West (view map) | ||||
Paleocoordinates: | 44.0° North, 95.0° West | ||||
Basis of coordinate: | based on political unit |
Time
Period: | Paleogene | Epoch: | Oligocene |
Stage: | Rupelian | 10 m.y. bin: | Cenozoic 4 |
*Period: | Tertiary | ||
Key time interval: | Orellan | ||
Age range of interval: | 33.90000 - 33.30000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Lithology and environment
Environment: | terrestrial indet. |
Taphonomy
Modes of preservation: | body |
Collection methods and comments
Collection size: | 132 specimens |
Taxonomic list comments:within a normal polarity zone that begins just below and ends just above Orella B; see Fig. 3 and Korth 1989b Fig. 1 mostly from the "Green marker level" and above, which are best represented by Gustafson's sections 3 and 4 from about 2 miles north of Chadron includes CSC-75 Bartlett South Central CSC-79 Rabbit Graveyard CSC-80 Scratching Post CSC-83 Central Marker Bed CSC-91 Midwest Valley NISP 132, excluding didelphid and indeterminate rhino |
Metadata
Database number: | 17164 | ||
Authorizer: | J. Alroy | Enterer: | J. Alroy | Research group: | vertebrate |
Created: | 1993-02-18 00:00:00 | Last modified: | 2002-06-03 03:27:42 |
Access level: | the public | Released: | 1993-02-18 00:00:00 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
1757. | E. P. Gustafson. 1986. Preliminary biostratigraphy of the White River Group (Oligocene, Chadron and Brule formations) in the vicinity of Chadron, Nebraska. Transactions of the Nebraska Academy of Sciences 14:7-20 [J. Alroy/J. Alroy/M. Uhen] |
Secondary references:
6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] | |
1977 | R. M. Hunt, Jr. 1998. Amphicyonidae. 196-227 [J. Alroy/J. Alroy/J. Alroy] | |
2109 | W. W. Korth. 1988. Paramys compressidens Peterson and the Systematic Relationships of the Species of Paramys (Paramyinae, Ischyromyidae). Journal of Paleontology 62(3):468-471 [J. Alroy/J. Alroy/J. Ju] | |
3068 | C. B. Schultz and C. H. Falkenbach. 1956. Miniochoerinae and Oreonetinae two new subfamilies of oreodonts. Bulletin of the American Museum of Natural History 109(4):373-482 [J. Alroy/J. Alroy/J. Marcot] |