Moses Oberlander Posted July 13, 2022 Share Posted July 13, 2022 (edited) Some interesting finds. I think the first one is a crocodile scute correct me if I’m wrong please… there are 2 pictures of each of the 3 specimens. Edited July 13, 2022 by Moses Oberlander Link to comment Share on other sites More sharing options...
val horn Posted July 13, 2022 Share Posted July 13, 2022 yes i think the first is croc, the second bone fragment, and the 3 rd tooth. It looks round enough in cross section to be poss croc as well. 1 Link to comment Share on other sites More sharing options...
Meganeura Posted July 13, 2022 Share Posted July 13, 2022 44 minutes ago, val horn said: yes i think the first is croc, the second bone fragment, and the 3 rd tooth. It looks round enough in cross section to be poss croc as well. Agreed on all 3 of these - and the last tooth seems to be too narrow to be gator, so I think croc is the proper one there. 1 Fossils? I dig it. Link to comment Share on other sites More sharing options...
Al Dente Posted July 13, 2022 Share Posted July 13, 2022 this one is a fragment of a shark tooth. 2 Link to comment Share on other sites More sharing options...
Al Dente Posted July 13, 2022 Share Posted July 13, 2022 and this one is the tip of a fish tooth. You can see the acrodin tip. 2 Link to comment Share on other sites More sharing options...
Carl Posted July 14, 2022 Share Posted July 14, 2022 The first one is more likely to be a piece of indet. bone, The pits are more consistent with spongy bone than a croc osteoderm, in my opinion. The second one is a shark tooth. Not enough to really ID to genus. The last one is most likely an Enchodus tooth tip,. Can we see the cross-section? 1 Link to comment Share on other sites More sharing options...
Moses Oberlander Posted July 19, 2022 Author Share Posted July 19, 2022 On 7/14/2022 at 8:27 AM, Carl said: The first one is more likely to be a piece of indet. bone, The pits are more consistent with spongy bone than a croc osteoderm, in my opinion. The second one is a shark tooth. Not enough to really ID to genus. The last one is most likely an Enchodus tooth tip,. Can we see the cross-section? I think it’s a little thick for coral I’ve attached more pics. Lemme know what you think also cross section from the tooth as you asked… thank you! Link to comment Share on other sites More sharing options...
Carl Posted July 19, 2022 Share Posted July 19, 2022 6 hours ago, Moses Oberlander said: I think it’s a little thick for coral I’ve attached more pics. Lemme know what you think also cross section from the tooth as you asked… thank you! Thanks. Very helpful. I'm still thinking the bone fragment is a flake of cancellous bone rather than an osteoderm. And the cross-section verifies that the tooth is Enchodus. Link to comment Share on other sites More sharing options...
Plax Posted July 19, 2022 Share Posted July 19, 2022 Usually agree 100% with Carl! Going to say osteoderm because it's flat and the pattern is smooth. 1 1 Link to comment Share on other sites More sharing options...
Moses Oberlander Posted July 19, 2022 Author Share Posted July 19, 2022 @Carl I think I must agree to @Plax on this one. It just doesn’t feel right for cancellous bone fragment… it’s very dense and heavy plus it’s fully flat. I really think if you’d see it in person you’d say the same…. 1 Link to comment Share on other sites More sharing options...
Carl Posted July 20, 2022 Share Posted July 20, 2022 I'm happy top be wrong on this: I think osteoderms are much more fun that scraps of bone. What leaves me on the bone frag idea is the subtle difference in the cross-sections of the junctions of the pits in these things. Cancellous bone tends to have a sharp junction (partly because those edges are breaks), croc osteoderms have more square junctions, and trionychids have more peaked and rounded junctions. Also, the non-pitted side of this piece is quite rough whereas I'd expect a very smooth or cross-hatched face. But I am not unaware that any of these details can be abused into any of the others by erosion. Who knows... Link to comment Share on other sites More sharing options...
Moses Oberlander Posted July 20, 2022 Author Share Posted July 20, 2022 @Carl would you know anyone or anyway I can get a positive ID? would pics from microscope help? Thank you so much! Link to comment Share on other sites More sharing options...
Carl Posted July 20, 2022 Share Posted July 20, 2022 40 minutes ago, Moses Oberlander said: @Carl would you know anyone or anyway I can get a positive ID? would pics from microscope help? Thank you so much! Sadly, I don't think you can get a perfectly positive ID here. Clearly, those of us with great experience here see different things. The specimen may be too fragmentary and worn. But I guess if you found an expert on osteoderms and allowed them to cut it, they histological details should clarify the ID. Doesn't seem worth it. 1 Link to comment Share on other sites More sharing options...
Plax Posted July 20, 2022 Share Posted July 20, 2022 Link to comment Share on other sites More sharing options...
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