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Isurus oxyrinchus (a.k.a., Isurus desori)
A fossil lower anterior tooth from a Shortfin mako shark. This specimen was collected at an undisclosed location along the Potomac River, Westmoreland County, Virginia USA. Note: The quarters used to show the relative size of the fossil specimens are approximately one inch (~1") in diameter. Photo 1 of 2: Lingual side, shown facing up; labial side, facing down. Photo 2 of 2: Labial side, shown facing up; lingual side, facing down.
A relatively "shallow" sea that existed along the east coast of the United States an estimated 10- to 15 million years ago, during the Miocene Epoch. Related Resource: Miocene Marine Life http://paleobiology.si.edu/geotime/main/...
© Copyright 2011 Walter Sanford. All rights reserved. www.wsanford.com
Spotted on Nov 26, 2011
Submitted on Dec 12, 2011
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