| Stylemys nebraskensis White River Fm. Converse Co., Wyoming Size: About 3 cm across The egg looks like it is mounted on a piece or rock from this formation. It is well done (not by me) and difficult to see. I didn't see that it was mounted until I photographed it. Even so, it is a rare to find an egg in this formation. It is assumed to be a Stylemys egg by association. Price: $100 US ID number: f1623 | 
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