Madmacs Posted January 14, 2022 Share Posted January 14, 2022 (edited) Hi I came across this fossil while digging a footing trench. Was about 1200mm below the ground. At the bottom of the trench in the attached image. In grey clay. In one of the many cobbles in this layer. it’s about 65mm [ 2-1/2” ] wide. Darcystown in North County Dublin in Ireland, about a mile from the east coast at about 350ft above sea level. Edited January 14, 2022 by Madmacs Added more detail 1 Link to comment Share on other sites More sharing options...
Fossildude19 Posted January 14, 2022 Share Posted January 14, 2022 Welcome to the Forum. This looks like a brachiopod shell imprint. @westcoast or @Tidgy's Dad may have some ideas to a further identity. 2 1 Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
abyssunder Posted January 14, 2022 Share Posted January 14, 2022 Maybe there are some remnants of a brachiopod, but definitely is related to brachiopods. " 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...
westcoast Posted January 14, 2022 Share Posted January 14, 2022 Yes, a partially dissolved brachiopod shell, probably a strophomenid, brachial valve. Most likely Carboniferous (Mississippian), so about 340 million years old or thereabouts. Nice picture! 2 1 Link to comment Share on other sites More sharing options...
Madmacs Posted January 15, 2022 Author Share Posted January 15, 2022 Thanks all for the replies! You know your brachiopods :-) this fossil imprint will make a nice paperweight. http://www.habitas.org.uk/fossils/brachiopods.html maybe an Echinoconchus type of braciopod? which seem to be common in this part of the world. Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted January 17, 2022 Share Posted January 17, 2022 Yes, it's a brachiopod brachial valve from the Lower Carboniferous limestones, which I know as the Mountain Limestones. I think it's not rounded enough / too wide along the hinge-line compared to the body for Echinaria. Antiquatonia is more likely in my opinion. Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
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