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File:Squalicorax-hillannex-182x-ng-sca.jpg

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Summary

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Description
English: Fossil shark tooth from the genus Squalicorax. 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 by Stephen Monson Geerts at 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 182X 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

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Captions

Fossil shark tooth, genus Squalicorax, from the Cretaceous Western Interior Seaway Coleraine formation in Minnesota.

inception

25 November 2018

coordinates of the point of view

47°19'16.000"N, 93°16'27.998"W

exposure time

0.025 second

media type

image/jpeg

File history

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Date/TimeThumbnailDimensionsUserComment
current23:49, 11 December 2019Thumbnail for version as of 23:49, 11 December 201911,201 × 10,801 (54.11 MB)Wi-kiry-lanUser created page with UploadWizard

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