Sand Creek (Orellan/Nebraska): Orellan, Nebraska

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
Peltosaurus granulosus Cope 1873
Gilmore 1928 1 specimen
CM 1038, anterior portion of right dentary and fragment of left
Mammalia - Perissodactyla - Hyracodontidae
Hyracodon nebraskensis (Leidy 1850)
CM specimen from "Orellan of Sand Creek, Sioux Co."
Mammalia - Merycoidodontidae
Stenopsochoerus sternbergi Schultz and Falkenbach 1956
Schultz and Falkenbach 1956
synonym of Miniochoerus affinis
Gidley collection of 1899
Mammalia - Entelodontidae
Archaeotherium mortoni Leidy 1850
Sinclair 1922
"lower Oreodon beds at the head of Sand Creek, Nebraska"; Gidley collection of 1896
see common names

Geography
Country:United States State/province:Nebraska County:Sioux
Coordinates: 42.4° North, 103.8° West (view map)
Paleocoordinates:43.6° North, 95.7° 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
Geological group:White River Formation:Brule
Lithology and environment
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection excludes:some genera
Reason for describing collection:paleoecologic analysis
Taxonomic list comments:Brule "A" based on Schultz and Falkenbach 1956
just south of Round Top and perhaps equivalent to UNSM Sx-22
Metadata
Database number:17175
Authorizer:J. Alroy, P. Barrett Enterer:J. Alroy, T. Cleary
Modifier:T. Cleary Research group:vertebrate
Created:1995-10-18 00:00:00 Last modified:2016-07-08 10:19:52
Access level:the public Released:1995-10-18 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

1235.ETE 10023J. Clark and J. R. Beerbower. 1967. Geology, paleoecology, and paleoclimatology of the Chadron Formation. Fieldiana 5(5):21-74 [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]
14538 C. W. Gilmore. 1928. Fossil lizards of North America. Memoirs of the National Academy of Sciences 22(3):1-201 [J. Head/J. Head/M. Carrano]
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]
3167 W. J. Sinclair. 1922. Entelodonts from the Big Badlands of South Dakota in the geological museum of Princeton University. Proceedings of the American Philosophical Society 60:467-495 [J. Alroy/J. Alroy/J. Alroy]