Rock-Guy-17 Posted May 30, 2023 Share Posted May 30, 2023 Following up on a recent trip report of mine from Big Brook with some unknown fossils. No experience in this area form me, help is greatly appreciated. Tried to approximate as well as I could 1. has these surface striations that do not appear to be patterns, rounded on one end. My hope is coprolite. 2. has one similar striation across the middle. Bottom of this specimen looks like it has been sharpened to a point Pretty unsure about all of these, but all of them have some surface marking/feature that show it is a fossil. 7. very weathered but appears to be a tooth 8 & 9. Appear to almost fit together, a feature like a straight line runs down the side of these pieces 10. smooth, but comes to a point on the ends, not sure if this is a fossil 12-14. Rock or bone fossil? 3 Link to comment Share on other sites More sharing options...
Mikrogeophagus Posted May 30, 2023 Share Posted May 30, 2023 1 looks like coprolite imo. 4 could be some kind of Myliobatiformes like Rhombodus. 5 and 6 look crustacean to me. I think some closer pics and more angles would help. Cool finds! 1 Link to comment Share on other sites More sharing options...
Rock-Guy-17 Posted May 30, 2023 Author Share Posted May 30, 2023 1 hour ago, EPIKLULSXDDDDD said: 1 looks like coprolite imo. 4 could be some kind of Myliobatiformes like Rhombodus. 5 and 6 look crustacean to me. I think some closer pics and more angles would help. Cool finds! Thank you for the feedback! Closer photo of 6 closer photo of 5: Link to comment Share on other sites More sharing options...
Rock-Guy-17 Posted May 30, 2023 Author Share Posted May 30, 2023 closer photo of 3: closer photo of 8&9: Link to comment Share on other sites More sharing options...
caterpillar Posted May 30, 2023 Share Posted May 30, 2023 Callianassa for the 5 1 http://www.paleotheque.fr Link to comment Share on other sites More sharing options...
Carl Posted May 31, 2023 Share Posted May 31, 2023 1, 2: fish coprolites, most likely shark 3: possible llthophagid boring steinkern 4: Brachyrhizodus wichitaensis 5, 6: callianassid (probably Mesostylus) arm segment and dactyl 7: too dark to tell 8, 9: Belemnitella americana phragmocone steinkerns 10, 11: too dark to tell 12-14: rocks Nice finds! 1 1 Link to comment Share on other sites More sharing options...
Dino2033 Posted June 4, 2023 Share Posted June 4, 2023 5 definitely seems like Protocallinassa Mortoni (Pilsbry) which is a common fossil at Big Brook. Here is a poor picture of a partial one that I found last year. 1 Link to comment Share on other sites More sharing options...
jonnyquest Posted June 4, 2023 Share Posted June 4, 2023 7 is sawfish rostral tooth. 1 Link to comment Share on other sites More sharing options...
Rock-Guy-17 Posted June 5, 2023 Author Share Posted June 5, 2023 Thanks for the IDs on these, this was very helpful! Link to comment Share on other sites More sharing options...
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