fossilsonwheels Posted October 10, 2020 Share Posted October 10, 2020 I am fairly comfortable with the STH micros as far as identification goes but I found a few things that I need some help with. First up is one that I am 90% sure on the ID but I want to be sure. I believe I found a couple of Raja teeth. The first one I found looks to be complete and tiny, a little over 1mm. I know skate teeth are somewhat uncommon in this fauna and this would be my first one. Link to comment Share on other sites More sharing options...
fossilsonwheels Posted October 10, 2020 Author Share Posted October 10, 2020 I think this is an Alopias tooth. Any thoughts?? Link to comment Share on other sites More sharing options...
fossilsonwheels Posted October 10, 2020 Author Share Posted October 10, 2020 Are these posterior teeth from a Lamniformes shark of some sort ?? That’s my best guess. Link to comment Share on other sites More sharing options...
fossilsonwheels Posted October 10, 2020 Author Share Posted October 10, 2020 One of the stranger looking teeth I found. I believe this is a Heterodontus tooth but I’ve not personally seen one quite like this. Could it be transitional between anterior and lateral ? Or I am way off base with Heterodontus? Link to comment Share on other sites More sharing options...
fossilsonwheels Posted October 10, 2020 Author Share Posted October 10, 2020 Mustelus teeth ?? Link to comment Share on other sites More sharing options...
hokietech96 Posted October 10, 2020 Share Posted October 10, 2020 Maybe second to last tooth are serration a on a broken root. I would see what the experts say. Link to comment Share on other sites More sharing options...
hokietech96 Posted October 10, 2020 Share Posted October 10, 2020 5 minutes ago, fossilsonwheels said: Mustelus teeth ?? I agree with mustelus. Nice looking oking teeth. 1 Link to comment Share on other sites More sharing options...
siteseer Posted October 10, 2020 Share Posted October 10, 2020 Hi Kurt, Yes, that first tooth is a Raja. Those teeth have never been named to species and it's possible it could belong to another skate genus. Skate teeth are uncommon-rare even when you fine-screen for tiny teeth because the animals frequent deeper water. The second tooth is an Alopias. Yes, that third tooth is a Heterodontus. I have a tooth like that too. I think it is from a transitional file as the shark was entering adulthood but I'm not sure. Yes, those are posterior teeth. I think the bigger one is from C. hastalis. The other one might be one as well. It's hard to tell with posteriors as they are all reduced to a more simple morphology.. I agree with Hokietech96 on the last two - Mustelus.. Jess 2 Link to comment Share on other sites More sharing options...
fossilsonwheels Posted October 10, 2020 Author Share Posted October 10, 2020 15 minutes ago, siteseer said: Hi Kurt, Yes, that first tooth is a Raja. Those teeth have never been named to species and it's possible it could belong to another skate genus. Skate teeth are uncommon-rare even when you fine-screen for tiny teeth because the animals frequent deeper water. The second tooth is an Alopias. Yes, that third tooth is a Heterodontus. I have a tooth like that too. I think it is from a transitional file as the shark was entering adulthood but I'm not sure. Yes, those are posterior teeth. I think the bigger one is from C. hastalis. The other one might be one as well. It's hard to tell with posteriors as they are all reduced to a more simple morphology.. I agree with Hokietech96 on the last two - Mustelus.. Jess Hi Jess Your explanation of the Heterodontus tooth makes sense because I could not find a match with adult teeth as I searched. I have anterolateral teeth but none have that many cusps. It really threw me though I was pretty sure it was a Bullhead tooth. I found two skate teeth in the last batch of matrix that Jesse sent me. I had not found any prior to that so i am pretty stoked to knock that off the list. Thank you for the input as always my friend ! Kurt Link to comment Share on other sites More sharing options...
fossilsonwheels Posted October 10, 2020 Author Share Posted October 10, 2020 31 minutes ago, hokietech96 said: I agree with mustelus. Nice looking oking teeth. They are nice looking teeth. I found a variety of colors. They are so small and easy to miss but STH matrix can be loaded with them ! Thank you Link to comment Share on other sites More sharing options...
MarcoSr Posted October 10, 2020 Share Posted October 10, 2020 10 hours ago, siteseer said: Yes, that third tooth is a Heterodontus. I have a tooth like that too. I think it is from a transitional file as the shark was entering adulthood but I'm not sure. Jess From Welton 1993: lower left dental series of a modern horn shark Heterodontus franciscanus: Marco Sr. "Any day that you can fossil hunt is a great day." My family fossil website Some Of My Shark, Ray, Fish And Other Micros My Extant Shark Jaw Collection Link to comment Share on other sites More sharing options...
fossilsonwheels Posted October 10, 2020 Author Share Posted October 10, 2020 5 hours ago, MarcoSr said: From Welton 1993: lower left dental series of a modern horn shark Heterodontus franciscanus: Marco Sr. Hi Marco Sr Thank you for the diagram. Very helpful and pretty cool to see how the teeth progress. Hope you are well !! Kurt Link to comment Share on other sites More sharing options...
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