File:Early tetrapod fossil in cave.jpg

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Tetrapods — ​This tetrapod fossil​ (some of the first four-legged vertebrates to walk the land)​ bed was found by Alan Grosse on March 2, 2014. The site is over 3,000 horizontal feet over 240 vertical feet from the only known entrance. There are three wet pits that have to be rappelled.

This is Alan's description of the find: "While exploring the cave, a fellow caver Jenny exclaimed she had never seen a sharks tooth in a cave before, so we both started looking. Lots of the typical marine fossils were found until we rounded the corner and I spotted the jaw sticking out of the wall. I captured a few quick photos and later that night posted them to “The Fossil Forum” in the identification forum. I was rather quickly referred to the Curator of Vertebrate Paleontology at Cambridge, UK, who very excitedly identified it as an early tetrapod fossil. In an effort to acquire some of the material for further study and identification she referred me to her stateside counterpart who is Curator of Vertebrate Paleontology at Harvard. After acquiring the landowners permission a sample was sent and they are currently analyzing the material."​

Thanks to Alan Cressler (acressler on Flickr) for sharing this photo with the USGS Science in Action Flickr Group! Share your earth science photo for a chance to be featured in upcoming USGS products and social media: www.flickr.com/groups/usgsscience
Date
Source Tetrapod Fossil
Author U.S. Geological Survey from Reston, VA, USA

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This image was originally posted to Flickr by U.S. Geological Survey at https://www.flickr.com/photos/27784370@N05/15587247848. It was reviewed on 12 November 2014 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.

12 November 2014

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current18:09, 12 November 2014Thumbnail for version as of 18:09, 12 November 20142,048 × 1,358 (1.31 MB)FunkMonk (talk | contribs)Transferred from Flickr via Flickr2commons

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