BrokenConcretion22.jpg


Summary

Description
English: A broken concretion with fossils inside; Late Cretaceous Pierre shale, near Ekalaka, Montana.
Date
Source Own work
Author Wilson44691

Photograph taken by Mark A. Wilson (Department of Geology, The College of Wooster). [1] archive copy at the Wayback Machine

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Captions

Late Cretaceous Pierre shale, near Ekalaka, Montana

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June 2008

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