Fremont Butte: Chadronian, Colorado

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Rodentia - Cylindrodontidae
Cylindrodontidae indet. Miller and Gidley 1918
Mammalia - Apternodontidae
Apternodus iliffensis Galbreath 1953
Mammalia - Protoceratidae
Protoceratidae indet. Marsh 1891
see common names

Geography
Country:United States State/province:Colorado County:Washington
Coordinates: 40.2° North, 103.3° West (view map)
Paleocoordinates:41.6° North, 94.8° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Paleogene Epoch:Eocene
Stage:Priabonian 10 m.y. bin:Cenozoic 3
*Period:Early/Lower Tertiary *Epoch:Late/Upper Eocene
*Local age/stage:Chadronian
Key time interval:Chadronian
Age range of interval:37.00000 - 33.90000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:White River
Stratigraphic resolution:member
Stratigraphy comments: "site consists of White River Group exposures... probably Chadronian"
Lithology and environment
Primary lithology: not reported
Lithology description: none given
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Associated major elements:some
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Collection method comments: DMNH collection
Metadata
Database number:27244
Authorizer:J. Alroy Enterer:J. Alroy
Modifier:J. Alroy Research group:vertebrate
Created:2002-11-24 10:30:34 Last modified:2006-08-14 01:10:44
Access level:the public Released:2002-11-24 10:30:34
Creative Commons license:CC BY
Reference information

Primary reference:
7521. R. J. Asher, M. C. McKenna, R. J. Emry, A. R. Tabrum, and D. G. Kron. 2002. Morphology and relationships of Apternodus and other extinct, zalambdodont, placental mammals. Bulletin of the American Museum of Natural History 273:1-117 [J. Alroy/J. Alroy/J. Alroy]