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Apalone heteroglypta
Images: 
By sseth
Taxonomy
Soft Shell Turtle
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Testudines
Family: Trionychidae
Genus: Apalone
Species: Apalone heteroglypta
Author Citation Cope, 1873
Geological Time Scale
Eon: Phanerozoic
Era: Cenozoic
Period: Quaternary
Sub Period: None
Epoch: Eocene
Stratigraphy
Green River Formation
Fossil Butte Member
Provenance
Collector: Seth Sorensen
Date Collected: 06/09/2017
Acquired by: Field Collection
Dimensions
Length: 48 "
Width: 27 "
Thickness: 3" "
Location
American Fossil Quarry
Lincoln County
Wyoming
United States
Comments
Apalone Heteroglypta was described by Edward Cope in 1873 but was originally called Trionyx Heteroglypta. It was later renamed when a more complete skeleton was discovered. It is very distinguishable from all other soft-shelled turtles from Fossil Lake because of its rounded shell, and the near full loss of the eighth costal bones. It is a very rare find and is one of the most beautiful turtles from the Fossil Butte Member of the Green River Formation.
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