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File:Trionyx sp. fossil soft-shelled turtle (Fossil Butte Member, Green River Formation, Lower Eocene; southwestern Wyoming, USA) (22294808636).jpg

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Axestemys byssina fossil soft-shelled turtle in lacustrine marlstone from the Eocene of Wyoming, USA (public display, Lake Superior Aquarium, Duluth, Minnesota, USA).

The Green River Formation of Utah-Colorado-Wyoming is famous for having vast oil shale deposits and for having exquisitely-preserved fossils. Fossil Butte National Monument in southwestern Wyoming preserves and displays some of these high-quality fossils. Leaves and fish are the most common large fossils in the Fossil Lake Basin of the Green River Fm.

This remarkable, complete fossil soft-shelled turtle is about 1.5 meters long.

Classification: Animalia, Chordata, Vertebrata, Chelonii/Testudines, Trionychidae

Stratigraphy: Fossil Butte Member, Green River Formation, upper Wasatchian Stage (Wa4)/Ypresian Stage/Lostcabinian, Lower Eocene

Locality: Fossil Lake Basin, southwestern Wyoming, USA
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Source Trionyx sp. fossil soft-shelled turtle (Fossil Butte Member, Green River Formation, Lower Eocene; southwestern Wyoming, USA)
Author James St. John

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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/22294808636 (archive). It was reviewed on 15 January 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

15 January 2019

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current09:15, 15 January 2019Thumbnail for version as of 09:15, 15 January 20192,780 × 3,335 (3.45 MB)Animalparty (talk | contribs)Transferred from Flickr via #flickr2commons

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