East of Little America: Bridgerian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Testudines - Trionychidae
Aspideretes annae n. sp. Zangerl 1944
synonym of Trionyx ellipticus
(1 measurement)
see common names

Geography
Country:United States State/province:Wyoming County:Sweetwater
Coordinates: 41.5° North, 109.8° West (view map)
Paleocoordinates:45.5° North, 96.0° West
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period:Paleogene Epoch:Eocene
10 m.y. bin:Cenozoic 2
*Period:Early/Lower Tertiary *Epoch:Middle Eocene
*Local age/stage:Bridgerian
Key time interval:Bridgerian
Age range of interval:50.30000 - 46.20000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Bridger
Stratigraphic resolution:bed
Stratigraphy comments: single specimen; unit or level within the Bridger not indicated
Lithology and environment
Primary lithology:gray claystone
Lithology description: "gray clay"
Environment:mire/swamp
Geology comments: specimen "probably sank into a deep, soft swamp mud... marsh deposites" near "channel fills"
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Articulated whole bodies:all
Associated major elements:none
Disassociated major elements:none
Disassociated minor elements:none
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:27382
Authorizer:J. Alroy Enterer:J. Alroy
Modifier:J. Alroy Research group:vertebrate
Created:2002-12-04 17:19:59 Last modified:2005-12-10 20:01:42
Access level:the public Released:2002-12-04 17:19:59
Creative Commons license:CC BY
Reference information

Primary reference:

7557. R. Zangerl. 1944. Aspideretes annae n. sp., a new species of soft shell turtle from the Bridger Eocene of Wyoming. American Midland Naturalist 31(3):583-591 [J. Alroy/J. Alroy/J. Alroy]