Lang Springs: Bridgerian, Colorado

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Dinocerata - Uintatheriidae
Uintatheriidae indet. Flower 1876
"uintathere"
Mammalia - Rodentia - Sciuravidae
Tillomys cf. senex Marsh 1872
West and Dawson 1975
not clear why this is omitted by Stucky et al.
Mammalia - Primates - Microsyopidae
Microsyops sp. Leidy 1872
Mammalia - Primates - Omomyidae
Washakius sp. Leidy 1873
    = Hemiacodon sp. Marsh 1872
Alroy 2002
replaces ID of West and Dawson 1975
Mammalia - Perissodactyla
Tapiroidea indet. Gill 1872
"tapir"
Mammalia - Perissodactyla - Equidae
Orohippus sylvaticus (Leidy 1870)
West and Dawson 1975
not clear why this is omitted by Stucky et al.
Mammalia - Viverravidae
Viverravus sp. Marsh 1872
West and Dawson 1975
not clear why this is omitted by Stucky et al.
Mammalia - Condylarthra - Hyopsodontidae
Hyopsodus sp. Leidy 1870
Mammalia - Didelphimorphia - Didelphidae
Peratherium sp. Aymard 1850
    = Didelphidae indet. Gray 1821
Alroy 2002
see common names

Geography
Country:United States State/province:Colorado County:Moffat
Coordinates: 40.6° North, 108.1° West (view map)
Paleocoordinates:44.4° North, 94.4° West
Basis of coordinate:based on political unit
Time
Period:Paleogene Epoch:Eocene
10 m.y. bin:Cenozoic 2
*Period:Tertiary
Key time interval:Bridgerian
Age range of interval:50.30000 - 46.20000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Washakie
Local section:Washa Local bed:5
Local order:bottom to top
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Taxonomic list comments:Locality 20 of West and Dawson 1975; considerably to the NE of the main Sand Wash collecting area, and based on map of Stucky et al. probably includes three localities
below Robin's Egg Blue Tuff, and therefore most likely equivalent to the very top of the Kinney Rim Mbr.
fauna is included in the table listing the general Sand Wash fauna, and where there is clear evidence I have assumed that such records pertain only to Lang Springs
no particular evidence that this is Uintan
Metadata
Database number:16251
Authorizer:J. Alroy Enterer:J. Alroy
Research group:vertebrate
Created:1997-04-12 00:00:00 Last modified:2002-06-03 03:27:41
Access level:the public Released:1997-04-12 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

3338. R. K. Stucky, D. R. Prothero, W. G. Lohr and J. R. Snyder. 1996. Magnetic stratigraphy, sedimentology, and mammalian faunas of the early Uintan Washakie Formation, Sand Wash Basin, northwestern Colorado. In D. R. Prothero, R. J. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America 40-51 [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]
3610 R. M. West and M. R. Dawson. 1975. Eocene fossil mammalia from the Sand Wash Basin, northwestern Moffat County, Colorado. Annals of Carnegie Museum 45(11):231-254 [J. Alroy/J. Alroy/M. Uhen]