Bird Quarry: Wasatchian - Bridgerian, Wyoming
collected by P. O. McGrew

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Amphibia - Temnospondyli
Caudata indet. Scopoli 1777
?Ambystomichnus tracks
Mammalia - Rodentia
Rodentia indet. Bowdich 1821
Mammalia - Primates - Notharctidae
Notharctus sp. Leidy 1870
Mammalia - Perissodactyla - Brontotheriidae
Palaeosyops sp. Leidy 1870
Mammalia - Phenacodontidae
Phenacodus sp. Cope 1873
Mammalia - Condylarthra - Hyopsodontidae
Hyopsodus sp. Leidy 1870
Reptilia - Testudines - Geoemydidae
Echmatemys sp. Hay 1906
Reptilia - Testudines - Trionychidae
Trionychidae indet. Gray 1825
Reptilia - Squamata
Squamata indet. Oppel 1811
Reptilia - Crocodylia
Crocodylia indet. (Owen 1842)
Reptilia - Anseriformes - Presbyornithidae
Presbyornis sp. Wetmore 1926
Actinopterygii
Actinopterygii indet. Cope 1887
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus sp. Agassiz 1843
see common names

Geography
Country:United States State/province:Wyoming County:Sweetwater
Coordinates: 42.1° North, 109.1° West (view map)
Paleocoordinates:46.6° North, 93.6° West
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Paleogene Epoch:Eocene
10 m.y. bin:Cenozoic 2
*Period:Tertiary *Local age/stage:Wasatchian - Bridgerian
Key time interval:Wasatchian - Bridgerian
Age range of interval:55.80000 - 46.20000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Wasatch Member:Cathedral Bluffs Tongue
Local section:GRBsn Local bed:3
Local order:bottom to top
Stratigraphic resolution:group of beds
Stratigraphy comments: said to be Wasatchian to Bridgerian
"approximately 30 m below the top of the Cathedral Bluffs Tongue"
Lithology and environment
Primary lithology:gray,green silty mudstone
Lithology description: "gray-green silty mudstone"; "drowned algae-encrusted root systems of trees" are present
Environment:lacustrine - large
Geology comments: quarry "appears to represent a muddy area on the forested shores of Lake Gosiute... that may have occasionally been flooded"
Taphonomy
Modes of preservation:body,adpression,trace
Size of fossils:macrofossils
Collection methods and comments
Collection methods:selective quarrying
Reason for describing collection:taxonomic analysis
Museum repositories:UW
Collectors:P. O. McGrew
Collection method comments: discovered by F. Simnacher in 1970; specimens in the University of Wyoming collection
Taxonomic list comments:from about 30 m below the top of the unit
Metadata
Also known as:UW V-58006
Database number:16134
Authorizer:J. Alroy Enterer:J. Alroy
Modifier:J. Alroy Research group:vertebrate
Created:2002-05-15 00:00:00 Last modified:2007-08-02 15:04:36
Access level:the public Released:2002-05-15 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

4172. J. R. Foster. 2001. Salamander tracks (Ambystomichnus?) from the Cathedral Bluffs Tongue of the Wasatch Formation (Eocene), northeastern Green River Basin, Wyoming. Journal of Paleontology 75(4):901-904 [J. Alroy/J. Alroy/J. Alroy]