that_one_girl Posted June 15, 2022 Share Posted June 15, 2022 Recently found this fossil while on family vacation in South-Central Minnesota. The site is limestone and also had a lot of Brachiopods. I'm so tired of relatives joking its poo. Hoping someone can help me ID it, the internet was of no help so far. Link to comment Share on other sites More sharing options...
JamieLynn Posted June 15, 2022 Share Posted June 15, 2022 I am no expert on the area, but they look like Foraminifera - single celled organisms. 1 www.fossil-quest.com Link to comment Share on other sites More sharing options...
historianmichael Posted June 15, 2022 Share Posted June 15, 2022 Although probably not right for the geology, it does look like the lining of a decapod burrow 1 Follow me on Instagram (@fossil_mike) to check out my personal collection of fossils collected and acquired over more than 15 years of fossil hunting! Link to comment Share on other sites More sharing options...
DPS Ammonite Posted June 15, 2022 Share Posted June 15, 2022 Look at this map and tell us what age rocks are in the area. I see Cretaceous rocks in south central Minnesota that are the right age for Opiomorpha. 1 1 1 My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
Ludwigia Posted June 15, 2022 Share Posted June 15, 2022 Decapod poop could be a good possibility. 1 1 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
abyssunder Posted June 15, 2022 Share Posted June 15, 2022 (edited) The form and arrangement of the "sticks" remind me of pellets, so ichnofossils. Edited June 15, 2022 by abyssunder 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...
that_one_girl Posted June 16, 2022 Author Share Posted June 16, 2022 (edited) 5 hours ago, DPS Ammonite said: Look at this map and tell us what age rocks are in the area. I see Cretaceous rocks in south central Minnesota that are the right age for Opiomorpha. I wasn't able to open the map, the nearest city is Rochester MN. After a little more research on the site it looks like the area has Platteville Limestone with fossils of ocean dwelling creatures dating back to 450 million years ago. Hope that helps. Edited June 16, 2022 by that_one_girl Link to comment Share on other sites More sharing options...
Carl Posted June 16, 2022 Share Posted June 16, 2022 The lining of a decapod burrow would have spherical pellets rather than elongate ones, I'm also seeing decapod coprolites here (the pellets lining the burrows are not coprolites). 1 1 Link to comment Share on other sites More sharing options...
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