ID help with this unusual rounded fossil

[davechesh]

Hi all,

Not sure what to make of this one, 

Found in the glacial till clay at Mappleton over the weekend.

 

Weighs a good 3kg and has by the looks of it had another layer to the outside, which has cracked off the face but still remains in the matrix end.

Any help would be greatly appreciated 

 

Thank you

 

David 

[Thomas.Dodson]

This appears to be a Productid brachiopod. Where is Mappleton? Do you have any information on the age of the erratics?

[TqB]

I agree with @Thomas.Dodson, productid. It's from the Yorkshire coast, England, and will be a Carboniferous erratic.

[davechesh]

Mappleton is in east Yorkshire just south of Hornsea, thank you for your help. I may try to remove some of the matrix to get a better picture of the outer layer