gturner333 Posted June 30, 2018 Share Posted June 30, 2018 I have bulk sampled many times at the Lost Creek Reservoir in Jacksboro, TX, which is Pennsylvanian material. After dissolving a rock from the Jacksboro Limestone, I found what looks like a fish tooth that is 1.1mm long. In fact, it closely resembles some of the palaeoniscoid fish teeth that I have found in the Permian. Since it is the only one that I have ever found at Jacksboro, there is a chance that it could have somehow been transferred there. Or, although I try to thoroughly clean my screens after each use, I guess there is the chance of cross contamination. I have used those screens to sort through Permian material recently. My question is, has anyone ever found a fish tooth at Jacksboro? If so, does it look like the attached picture? Thanks for any help. Link to comment Share on other sites More sharing options...
caldigger Posted June 30, 2018 Share Posted June 30, 2018 Nice one. Hope you find some answers. Link to comment Share on other sites More sharing options...
Heteromorph Posted June 30, 2018 Share Posted June 30, 2018 Nice tooth! Maybe @BobWill could help. Link to comment Share on other sites More sharing options...
Bullsnake Posted June 30, 2018 Share Posted June 30, 2018 For some of the fish teeth I've found, Hickory Creek shale in Kansas, I found this in Fruitbat's library. There may be something more applicable to your formation there. paleo.paper.096op.pdf Incidentally, here is one of mine that looks similar to yours. @Carl might have some input, as well. Steve Link to comment Share on other sites More sharing options...
gturner333 Posted July 1, 2018 Author Share Posted July 1, 2018 So, Bullsnake, just to be sure, did you find the above in the Hickory Creek shale? It really does look like mine. Link to comment Share on other sites More sharing options...
JimB88 Posted July 1, 2018 Share Posted July 1, 2018 The striations remind me of a Symmorium type cladodont shark, but would need the root (with the cusplets) to be sure. Link to comment Share on other sites More sharing options...
gturner333 Posted July 1, 2018 Author Share Posted July 1, 2018 Did cladodont shark teeth have an acrodin tip? These teeth have a clear acrodin tip, which I have been told are characteristic of ray-finned fish. But there are some similarities with the cladodont cusps. Link to comment Share on other sites More sharing options...
Bullsnake Posted July 1, 2018 Share Posted July 1, 2018 11 hours ago, gturner333 said: So, Bullsnake, just to be sure, did you find the above in the Hickory Creek shale? It really does look like mine. That's correct. Along with several other varieties and some that I surmise to be cladodont fragments. Steve Link to comment Share on other sites More sharing options...
Carl Posted July 2, 2018 Share Posted July 2, 2018 I'm with @gturner333 100%. Link to comment Share on other sites More sharing options...
gturner333 Posted July 2, 2018 Author Share Posted July 2, 2018 Carl, are you agreeing with my thinking that it is a palaeoniscoid fish tooth or that it does look like a cladodont tooth piece? Have you ever found any Pennsylvanian fish teeth? If so, where? Link to comment Share on other sites More sharing options...
Carl Posted July 2, 2018 Share Posted July 2, 2018 39 minutes ago, gturner333 said: Carl, are you agreeing with my thinking that it is a palaeoniscoid fish tooth or that it does look like a cladodont tooth piece? Have you ever found any Pennsylvanian fish teeth? If so, where? Sorry. Agreeing that the acrodin tip gives us an actinopterygian and that there's a vague similarity to cladodonts. Definitely don't think it's a shark. The only Pennsylvanian teeth I've found were chondrichthyans at Wilson's Clay Pit. Link to comment Share on other sites More sharing options...
gturner333 Posted July 2, 2018 Author Share Posted July 2, 2018 ok, thanks to all for your input. Link to comment Share on other sites More sharing options...
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