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westruntonnovice
Hi

Can someone id this large shell, its 10 cm x 7cms and quite heavy. I found it
at Cart Gap Happisburgh in Norfolk last month. I have heard of a devils toenail could it be this.  Many thanks for your help.



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prep01
Hello, you are close - Gryphaea possibly bilobissa - from the Oxford clay (150 - 160 mya) originally and deposited on the East coast by a glacier.
Colin Huller
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westruntonnovice
Thank you Colin for taking the time to answer

Jan
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Gerald Gibson
Westruntonnovice:

The worn nature of your Gryphea is proof they were water-worn or glacial deposits.  I have found hundreds of these in my neighborhood (Mid-Cretaceous and in good shape), which we in Texas call "Texas Oysters" (Gryphea Exogyra).  They are, according to some fossil hunters, our state fossil.

--- Gerald
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