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_viator
Hi all,

Went to Gilbert’s Grave in the Cotswolds yesterday for the first time looking for Clypeus ploti. Didn’t really have any luck but found this and wondered if anyone knows what it is? I thought it was Clypeus at first but since cleaning more of the rock/sand from it, I’m not convinced as there are no markings on the top. Is this some sort of sponge? Never seen anything like it before!

Thanks in advance!

Gill Click image for larger version - Name: E70A0A24-4B5E-4485-AC4D-9FFAA5D76D70.jpeg, Views: 52, Size: 3.69 MB Click image for larger version - Name: 8BD2E8D6-D09F-4EA7-B808-E8E7B689BBB4.jpeg, Views: 55, Size: 3.08 MB Click image for larger version - Name: 9DCF694E-02C0-400F-BA58-4B039FB2D1F2.jpeg, Views: 48, Size: 3.42 MB Click image for larger version - Name: 3EA8F60D-5558-4636-9555-EC5A41792D21.jpeg, Views: 48, Size: 3.97 MB
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prep01
Hi Gill, I think it's one valve of a bivalve with bryozoans  encrustting it.
Colin Huller
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Dirty Pete
A badly beaten up Stiphrothyris brachiopod maybe.

Pete.
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_viator
Thanks both!

I probably should've said that its about 10cm across, so pretty big. Do brachiopods/bivalves come in this size? From what i can tell, its very round and flattish, like Clypeus ploti, but pretty sure it isn't that. Im baffled! There are no markings or distinguishing features i can see on the surface.

Gill
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Dirty Pete
I guess keep digging in the hope of revealing something.

Pete.
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Richard
Hi - I think this is a severely weathered Clypeus - the size, shape and surface texture are correct and I think I can see signs of two 'petals'
Richard
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Dirty Pete
Here's a badly beaten up one I found from the same place years ago. 10cm diameter, 2mm test/shell thickness and filled with oolite.
I guess nature did a good job of sanding off the features of yours. 

IMG_1613.jpg 
Pete.
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Dirty Pete
Thanks Rob, yes it's a Clypeus ploti echinoid. I posted the pic in the hope Gill could spot similar surface features.

Pete
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_viator
Thanks everyone for the responses!

The shape of what i found definitely made me think it was Clypeus but since there were no surface features or anything that looked like the typical shell, i began to think twice! A real shame mine doesn't have any detail on it but ill keep persevering and hopefully ill find a better one 😉

Thanks again!

Gill
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