File:Tetrapod tracks - geograph.org.uk - 769840.jpg
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| Description |
English: Tetrapod tracks About 385 million years ago, a primitive vertebrate passed along a muddy shoreline in the equatorial swampland that is now southeastern Ireland and left prints as if in wet concrete. The prints were preserved by silt overlying them, and were converted to rock over the ages. The Valentia Island trackways are among the oldest signs of vertebrate life on land. They were discovered in 1993. |
| Date | |
| Source | From geograph.org.uk |
| Author | Dafydd Humphreys |
| Attribution (required by the license) | Dafydd Humphreys / Tetrapod tracks / |
| Camera location |   | View this and other nearby images on: OpenStreetMap |  |
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| Object location | | View this and other nearby images on: OpenStreetMap | |
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This image was taken from the Geograph project collection. See this photograph's page on the Geograph website for the photographer's contact details. The copyright on this image is owned by Dafydd Humphreys and is licensed for reuse under the Creative Commons Attribution-ShareAlike 2.0 license.
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This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
Attribution: Dafydd Humphreys
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 19:45, 19 February 2011 | | 640 × 480 (109 KB) | GeographBot (talk | contribs) | == {{int:filedesc}} == {{Information |description={{en|1=Tetrapod tracks About 385 million years ago, a primitive vertebrate passed along a muddy shoreline in the equatorial swampland that is now southeastern Ireland and left prints as if in wet concrete. |
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