Prehistoric Lobsters Made Homes of Ancient Ammonoid Shells - Wired News

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Prehistoric Lobsters Made Homes of Ancient Ammonoid Shells
[SIZE=-1]Wired News[/SIZE]
[SIZE=-1]The shelled cephalopod specimen in question belonged to the species Harpoceras falciferum, and, as in other mollusks, this 180 million year old ammonoid's shell was coated in a thin outer layer called the periostracum. That organic patina was all that ...[/SIZE]
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