![[ammonite]](d116a.jpg) |
Fossil Ammonite, Arietites stellaris, Jurassic period, from about 188 million to about 184 million years old. Courtesy of the National Museum of Natural History |
| Ammonite |
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Fossil Ammonite, Arietites stellaris, Jurassic period, from about 188 million to about 184 million years old. Courtesy of the National Museum of Natural History |
| Ammonite |
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