Chris finner Posted May 9, 2022 Share Posted May 9, 2022 My son and I get a lot of clams from castleton, UK but I’ve never seen anything quite like this… any ID would be fantastic. thanks 1 Link to comment Share on other sites More sharing options...
abyssunder Posted May 9, 2022 Share Posted May 9, 2022 In my opinion, there are two brachiopods attached. (Maybe the spines are gone?) 1 1 " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
Misha Posted May 9, 2022 Share Posted May 9, 2022 (edited) I don't think this is two brachiopods, to me it looks a lot more like one large brachiopod which was crushed and is missing a chunk from the middle of the shell closer to the hinge line. You can see where the missing portion is as it exposes the calcite crystal filled inside. I'm not too good with Carboniferous brachs, @Tidgy's Dad may be able to say more, especially on the actual ID of the organism. Edited May 9, 2022 by Misha 1 1 Link to comment Share on other sites More sharing options...
abyssunder Posted May 9, 2022 Share Posted May 9, 2022 1 minute ago, Misha said: I don't think this is two brachiopods, to me it looks a lot more like one large brachiopod which was crushed and is missing a chunk from the middle of the shell. Not good with Carboniferous brachs, @Tidgy's Dad may be able to say more, especially on the actual ID of the brach. So, in your opinion is a brachiopod and not a bivalve? " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
Misha Posted May 9, 2022 Share Posted May 9, 2022 12 minutes ago, abyssunder said: So, in your opinion is a brachiopod and not a bivalve? I believe it is a productive brachiopod. If it were more complete I believe it may look a bit more like this: 1 Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted May 13, 2022 Share Posted May 13, 2022 (edited) When I first saw this, I thought @abyssunder was correct and this showed two specimens on top of each other, but; on closer inspection, I now believe that @Misha is most certainly correct and that this is just the remains of one large productid brachiopod. There are at least fifty species of productid known from the area and about forty of them are productoids, so it's pretty difficult to narrow that down without some extensive research. Size may help to reduce this number significantly and so Echinoconchus is a possibility, though there are at least three species of this. Edited May 13, 2022 by Tidgy's Dad 1 2 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Chris finner Posted May 15, 2022 Author Share Posted May 15, 2022 Thanks you everyone for looking I will let me son know Link to comment Share on other sites More sharing options...
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