Image: Grypania spiralis
Size of this preview: 800 × 600 pixels. Other resolutions: 320 × 240 pixels | 2,592 × 1,944 pixels.
Original image (2,592 × 1,944 pixels, file size: 1.34 MB, MIME type: image/jpeg)
Description: Grypania spiralis, Negaunee Iron, Palmer, Michigan (USA) (-2.200 MA). CosmoCaixa (Barcelona)
Title: Grypania spiralis
Credit: Own work
Author: Xvazquez
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC-BY-SA-3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0/
Attribution Required?: Yes
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