File:Gastropods-bluegreenshale-160x-t2.jpg

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Captions

Captions

Fossil snail shell impressions in shale from the Cretaceous period Coleraine formation in Minnesota.

Summary

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Description
English: This image shows two small fossil gastropod shell exterior impressions in blue-green shale from the Coleraine formation. Gastropods are more commonly known as snails. The Coleraine formation is a Cretaceous period geological formation in Minnesota that contains fossils from the Western Interior Seaway approximately 90 million years ago. This layer was exposed by iron mining on the Mesabi Iron Range. This fossil was found in Hill Annex Mine State Park in Calumet, MN. The fossil was collected for the Hill Annex Paleontology Project which is partnered with the Minnesota Discovery Center and the Science Museum of Minnesota. The image was taken with a ZEISS Smartzoom 5 microscope at 160X magnification using stitching and extended depth of field.
Date
Source Own work
Author Rylan Bachman
Camera location47° 19′ 16″ N, 93° 16′ 28″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

Licensing

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I, the copyright holder of this work, hereby publish it under the following license:
w:en:Creative Commons
attribution
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current01:51, 7 December 2019Thumbnail for version as of 01:51, 7 December 201912,799 × 9,000 (70.95 MB)Wi-kiry-lan (talk | contribs)User created page with UploadWizard

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