fossiljim Posted June 20, 2012 Share Posted June 20, 2012 Looking through Permian microfossil material from Waurika, Oklahoma - Wellington Formation, I found what appears to be a barbed tooth. I cannot find ID on this specimen on the internet and am asking for help on this one. Thank you Link to comment Share on other sites More sharing options...
Uncle Siphuncle Posted June 20, 2012 Share Posted June 20, 2012 Are you sure its a tooth, and not the end of a pectoral or cephalic spine? Grüße, Daniel A. Wöhr aus Südtexas "To the motivated go the spoils." Link to comment Share on other sites More sharing options...
fossiljim Posted June 20, 2012 Author Share Posted June 20, 2012 I really have no idea, so tooth was a guess. I have looked through a fair amount of this material and have found xenacanth, acrodus, and trimerorachis teeth, but never anything barbed like this. You think it could be some kind of spine? Link to comment Share on other sites More sharing options...
PaleoDude24 Posted June 20, 2012 Share Posted June 20, 2012 It looks sort of like a stingray spine of some sort. Then again I'm not an expert on this at all and it is really small. Just throwing my opinion in there. Link to comment Share on other sites More sharing options...
Al Dente Posted June 20, 2012 Share Posted June 20, 2012 Xenachanthus had a dorsal spine with two rows of barbs similar to your fossil. 1 Link to comment Share on other sites More sharing options...
Acryzona Posted June 20, 2012 Share Posted June 20, 2012 Nice find. I too was leaning towards stingray barb but stingrays didn't appear until the early Cretaceous (at least according to Wikipedia!). Collecting Microfossils - a hobby concerning much about many of the little paraphrased from Dr. Robert Kesling's book Link to comment Share on other sites More sharing options...
Auspex Posted June 20, 2012 Share Posted June 20, 2012 I think it's a piece of Xenacanthus spine; the 4th pic down on this LINK is a nice match. Our member dinodigger worked on this dig "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
fossiljim Posted June 20, 2012 Author Share Posted June 20, 2012 (edited) I think it's a piece of Xenacanthus spine; the 4th pic down on this LINK is a nice match. Our member dinodigger worked on this dig Thanks. That looks like a perfect match to me. I guess the spines weren't often preserved since this is the first that I have found after finding a lot of teeth and denticles. I have found other spines without barbs, but I guess they are from fish. Edited June 20, 2012 by fossiljim 1 Link to comment Share on other sites More sharing options...
Auspex Posted June 20, 2012 Share Posted June 20, 2012 'Twas Al Dente who named the whale; I just went looking for an example. "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
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