Slipper Limpet - not that great pic. I'm really not sure.
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I've come back to this Graham. Have you any more thoughts?
Does it not seem a bit less symmetrical than a Chiton?
I don't think 'plates' are there.
Might it still be a tiny slipper limpet Crepidula fornicata?
Noticed in Collins guide Musculus costulatus or maybe green crenella= Musculus discors, are very like
I wonder Chris/Graham.
Take a look at MickUpton's http://www.ispot.org.uk/node/289871
(with agreements but shamefully none of us!)
Don't you think the Musculus bivalve should be standing, more or less, on its joint (hinge) with attachments downamost?
Looking at my bivalve here
yet to be unidentified but one can see that is stands like a mussel.
So given that you are suggesting Musculus costulatus, I cannot see how this one (Graham's) can be attached by its hinge.
The only illustrative picture I can find is here http://www.conchology.be/?t=68&u=223849&g=a1780476be3d4d877d8a3f41dbe53d...
There are plenty of 'one sided' bivalves.
A rather good site here -
Hope we're right!
I really can't conceive the plates & girdle but could well be slipper limpet.
I have just noticed Graham that you posted another http://www.ispot.org.uk/node/249923
They are pretty similar, even Chris agreed with that one.
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