File:Internal mold, Hormotoma, Mollusca, Gastropoda, Murchisonioidea - Iowa, USA.jpg
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Size of this preview: 380 × 600 pixels. Other resolutions: 152 × 240 pixels | 630 × 994 pixels.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 10:35, 13 October 2013 | 630 × 994 (169 KB) | Jacopo Werther | {{Information |Description=Many fossils of shelly organisms (e.g., bivalves, gastropods, brachiopods, cephalopods) have had the original hard parts dissolved away. In such cases, the fossil itself is an impression of the outside of the shell (external... |
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