mateosfossils Posted December 2, 2022 Share Posted December 2, 2022 This is from the Platteville formation. Is it a barnacle? I'll buy a ruler tomorrow lol. Thanks for all the help today!! Link to comment Share on other sites More sharing options...
Coco Posted December 2, 2022 Share Posted December 2, 2022 (edited) I don’t recognize any of a barnacle distinctive detail. We’ll need pictures taken in daylight for better quality. BTW, we’re on an international forum, the non-American community is very large here. Please use cm or inches for the size of your items, there are only Americans (and it seems Canadians) to know the size of your paper money Coco EDIT : I saw too late that you’re going to buy a rule tomorrow... Edited December 2, 2022 by Coco 1 ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
Rockwood Posted December 2, 2022 Share Posted December 2, 2022 I think this looks like shell, or similar, material that has nearly degraded to plain old limestone. 1 Link to comment Share on other sites More sharing options...
Mahnmut Posted December 2, 2022 Share Posted December 2, 2022 You are some way from texas, still it looks somewhat rudistlike to me, but hard to tell from the pics. Best regards, J 1 1 Try to learn something about everything and everything about something Thomas Henry Huxley Link to comment Share on other sites More sharing options...
minnbuckeye Posted December 2, 2022 Share Posted December 2, 2022 The Platteville Formation occurred roughly 450 million years ago. Barnacles did not exist for another 100 million years. Rudists not for another 300 million years. I agree it looks like a bunch of shell hash. Mike 1 1 Link to comment Share on other sites More sharing options...
abyssunder Posted December 2, 2022 Share Posted December 2, 2022 It looks like coquina. " 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...
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