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 post Share on other sites
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 Link to post Share on other sites
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 post Share on other sites
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 Link to post Share on other sites
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 post Share on other sites
abyssunder Posted December 2, 2022 Share Posted December 2, 2022 It looks like coquina. Link to post Share on other sites
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