Little Muddy VI (UM BB-74): Bridgerian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Rodentia - Sciuravidae
Sciuravus nitidus Marsh 1871
1 specimen
Mammalia - Primates - Microsyopidae
Microsyops cf. elegans (Marsh 1871)
1 specimen
Mammalia - Primates - Notharctidae
Smilodectes mcgrewi Gingerich 1979
1 specimen
Mammalia - Primates - Omomyidae
Omomys carteri Leidy 1869
1 specimen
Mammalia - Perissodactyla - Hyrachyidae
Hyrachyus sp. Leidy 1871
1 specimen
Mammalia - Metacheiromyidae
Metacheiromys sp. Wortman 1903
1 specimen
Reptilia - Testudines - Geoemydidae
Echmatemys septaria (Cope 1873)
Zonneveld et al. 2000
synonym of Echmatemys stevensoniana
Reptilia - Testudines - Trionychidae
cf. Platypeltis sp. Fitzinger 1835
Zonneveld et al. 2000
spelled with current rank as Apalone (Platypeltis)
Reptilia - Anguidae
Xestops cf. vagans (Marsh 1872)
Zonneveld et al. 2000
original and current combination Oreosaurus vagans
Glyptosaurus sylvestris Marsh 1871
Zonneveld et al. 2000 1 specimen
UM 101648, left dentary and skeletal fragments
Reptilia
cf. Crocodylus affinis Marsh 1871
Zonneveld et al. 2000
nomen dubium belonging to Crocodylus
Pristichampsus vorax (Troxell 1925)
Zonneveld et al. 2000
recombined as Boverisuchus vorax
cf. Borealosuchus sp. Brochu 1997
Zonneveld et al. 2000
see common names

Geography
Country:United States State/province:Wyoming County:Lincoln
Coordinates: 41.8° North, 110.7° West (view map)
Paleocoordinates:45.9° North, 96.9° West
Basis of coordinate:based on political unit
Geographic resolution:small collection
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:Green River
Local section:WGRB Local bed:11
Local order:bottom to top
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Collection size:6 specimens
Reason for describing collection:biostratigraphic analysis
Taxonomic list comments:NISP based on Gunnell 1998c
see map of Zonneveld et al. 2000, who repeat the list
Metadata
Database number:16270
Authorizer:J. Alroy Enterer:J. Alroy
Modifier:J. Alroy Research group:vertebrate
Created:2002-05-15 00:00:00 Last modified:2007-03-20 13:06:53
Access level:the public Released:2002-05-15 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

1248. W. C. Clyde, J.-P. Zonneveld, J. Stamatakos, G. F. Gunnell, and W. S. Bartels. 1997. Magnetostratigraphy across the Wasatchian-Bridgerian boundary (early to middle Eocene) in the western Green River Basin, Wyoming. Journal of Geology 105:657-669 [J. Alroy/J. Alroy/J. Alroy]

Secondary references:

3806 J.-P. Zonneveld, G. F. Gunnell, and W. S. Bartels. 2000. Early Eocene fossil vertebrates from the southwestern Green River Basin, Lincoln and Uinta counties, Wyoming. Journal of Vertebrate Paleontology 20(2):369-386 [J. Alroy/J. Alroy/J. Alroy]