Rabbit Graveyard (Lower): Orellan, Nebraska

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Creodonta - Hyaenodontidae
Hyaenodon crucians Leidy 1853
Mammalia - Carnivora - Amphicyonidae
Daphoenus sp. Leidy 1853
Hunt 1998
"Orella Member... 2.5 miles N of Chadron"
Mammalia - Carnivora - Canidae
Hesperocyon gregarius (Cope 1873)
surely includes specimen of Wang 1994 from Bartlet Ranch, 2 mi N of Chadron, 120 ft above Blue Ash, Orellan
Mammalia - Perissodactyla - Equidae
Mesohippus bairdi (Leidy 1850)
Mammalia - Perissodactyla
Rhinocerotoidea indet. Gray 1821
"larger rhino", hyracodontid or rhinocerotid
Mammalia - Perissodactyla - Hyracodontidae
Hyracodon nebraskensis (Leidy 1850)
Mammalia - Camelidae
Poebrotherium wilsoni Leidy 1847
Mammalia - Merycoidodontidae
Merycoidodon sp. Leidy 1848
Platyochoerus heartensis Schultz and Falkenbach 1956
    = Miniochoerus starkensis Schultz and Falkenbach 1956
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
Hypertragulus calcaratus (Cope 1873)
Mammalia - Leptomerycidae
Leptomeryx sp. Leidy 1853
large
Leptomeryx evansi Leidy 1853
probably includes type of "L. exilis" Cook 1934 from "Brule (Middle Oligocene) beds, about two miles north of Chadron"
Mammalia - Rodentia - Ischyromyidae
Ischyromys typus Leidy 1856
Mammalia - Rodentia - Castoridae
Agnotocastor readingi n. sp. Korth 1988
Korth 1988
CSC-80; "A. praetereadens"
Mammalia - Rodentia - Eutypomyidae
Eutypomys thomsoni Matthew 1905
Mammalia - Rodentia - Heliscomyidae
Heliscomys hatcheri Wood 1935
Mammalia - Rodentia - Eomyidae
Paradjidaumo trilophus (Cope 1873)
recombined as Adjidaumo trilophus
Adjidaumo minutus (Cope 1873)
Mammalia - Rodentia - Cricetidae
Eumys elegans Leidy 1856
Mammalia - Lagomorpha - Leporidae
Megalagus turgidus (Cope 1873)
Palaeolagus haydeni Leidy 1856
Mammalia - Didelphimorphia - Didelphidae
Peratherium sp. Aymard 1850
    = Didelphidae indet. Gray 1821
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
Formation:Brule Member:Orella
Local section:PineR Local bed:3
Local order:bottom to top
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]