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Pterygotus

ID please?

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Pterygotus

Could someone please ID this fossil from Charmouth, England? It looks like some sort of crustacean. Two of these were found in the same rock. The other one is being acid prepped.

A498033C-B376-436C-994A-376FE073F99E.jpeg

FAF6A9B4-F432-42D6-B577-BD91CADA97D2.jpeg

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Manticocerasman

It looks like a brachiopod to me.

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TqB
46 minutes ago, Manticocerasman said:

It looks like a brachiopod to me.

I agree - not one I've seen from there before, with that double sulcus. Acid prepping will dissolve it!

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Pterygotus
16 minutes ago, TqB said:

I agree - not one I've seen from there before, with that double sulcus. Acid prepping will dissolve it!

By dissolving do you mean the fossil or the limestone?

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TqB
15 minutes ago, Pterygotus said:

By dissolving do you mean the fossil or the limestone?

Both. Unfortunately, you can't use acid to prep calcium carbonate shells.

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FossilDAWG

Agreed, both with the brachiopod ID and the comments on acid prepping.  Acid will work only on silicified fossils in a calcium carbonate (limestone) matrix, and even then it must be done with care.

 

Don

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Zenmaster6

I'm glad the others were able to identify Brachiopod. Those cracks on the shell look so suggestive of crab :P

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