fossilsonwheels Posted April 21, 2021 Author Share Posted April 21, 2021 22 minutes ago, digit said: Would love to see a photo (or two) of that tooth if you can easily lay your mitts on it. Cheers. -Ken No problem Ken. Should have done that already as it is really strange tooth. Link to comment Share on other sites More sharing options...
siteseer Posted April 21, 2021 Share Posted April 21, 2021 3 hours ago, fossilsonwheels said: Hi Jess Thank you so much for stopping by to drop knowledge on us ! Always new information from you. I have only seen a couple of the Kemp Clay teeth pop up. I was lucky to get one and it’s pretty large to boot. I found several anteriors in the Cretaceous matrix I have from Colorado. Last count was 5. Also found one in some Atco matrix. No lateral teeth yet. Very exciting finds. Kurt Hi Kurt, I heard that at least one of the guys who used to collect Kemp Clay teeth was going to take a friend out there to see what they can find but then COVID hit last year. Maybe things will be good enough for them by the end of the year to plan another trip. Jess Link to comment Share on other sites More sharing options...
digit Posted April 21, 2021 Share Posted April 21, 2021 11 hours ago, fossilsonwheels said: No problem Ken. Should have done that already as it is really strange tooth. Bizarre! Quite outside my concept of Sphyrna tiburo. The anterior grasping teeth blend into the lateral/posterior molariform crushing teeth with smaller and smaller cusps till they are long, low and cuspless. Even the anterior teeth only have a single cusp (though the ends of the tooth bend upward into sort of weak side cusps. None are as multi-cusped as that oddity. I am in no way an expert in fossilized shark teeth (though I know someone who is working toward that goal). You may wish to seek more opinions on that lumpy bumpy tooth. I may have missed it but did you mention a locality and an a formation (age) for that weird one? Cheers. -Ken Link to comment Share on other sites More sharing options...
fossilsonwheels Posted April 21, 2021 Author Share Posted April 21, 2021 4 hours ago, digit said: Bizarre! Quite outside my concept of Sphyrna tiburo. The anterior grasping teeth blend into the lateral/posterior molariform crushing teeth with smaller and smaller cusps till they are long, low and cuspless. Even the anterior teeth only have a single cusp (though the ends of the tooth bend upward into sort of weak side cusps. None are as multi-cusped as that oddity. I am in no way an expert in fossilized shark teeth (though I know someone who is working toward that goal). You may wish to seek more opinions on that lumpy bumpy tooth. I may have missed it but did you mention a locality and an a formation (age) for that weird one? Cheers. -Ken It’s an STH tooth. Jess helped me figure out that is a juvenile to adult transitional Heterodontus tooth. Quite bizarre. Those are very interesting teeth. I don’t know anything about Bonnethead teeth so it’s cool to see that. Link to comment Share on other sites More sharing options...
digit Posted April 21, 2021 Share Posted April 21, 2021 Ah, it's a Heterodontus and not a Sphyrna tiburo--I must have gotten confused somewhere along the way (not highly surprising). I'll admit I know nothing of any ontological changes in Heterodontus but if there is a paper that might describe a juvenile form I'd truly love to read it. @siteseer STH has a nice density of Heterodontus that I can see it would be a great place for teeth from different life stages. Cheers. -Ken Link to comment Share on other sites More sharing options...
fossilsonwheels Posted April 26, 2021 Author Share Posted April 26, 2021 A little anterior tooth from a great location. Heterodontus sp Pliocene Bahia ingles Copiapo Chile Link to comment Share on other sites More sharing options...
siteseer Posted May 1, 2021 Share Posted May 1, 2021 Here's a Heterodontus fin spine from the Sharktooth Hill Bonebed. It's just under 3 1/2 inches (88mm long). It's shiny towards the tip but that's not enameloid. It's an outer layer of dentin. These spines are quite rare in the bonebed. 1 Link to comment Share on other sites More sharing options...
siteseer Posted May 1, 2021 Share Posted May 1, 2021 Here's a Heterodontus lateral tooth from the Late Miocene Port Campbell Limestone, Portland, Victoria, Australia. It's a worn crown with no root but it still shows some surface detail including a transverse crest more offset from the middle than I've seen in other Heterodontus teeth. It might be the largest tooth I have at not quite 5/8 inches (15mm) along its greatest dimension. 1 Link to comment Share on other sites More sharing options...
fossilsonwheels Posted July 10, 2021 Author Share Posted July 10, 2021 I just got some nice Ukrainian Heterodontus teeth from @Anomotodon. Lateral tooth and spine fragment Cretaceous Burim Site Ukraine Lateral teeth Eocene Kyiv Clay Kyiv Ukraine Link to comment Share on other sites More sharing options...
Cainozoic Posted September 5, 2021 Share Posted September 5, 2021 Here are some Heterodontus teeth that I found at Batesford Quarry in Victoria quite some time ago. Sorry for the late edition, I really should check out this forum more often. 1 Old fossil hunters never die, they just petrify! Link to comment Share on other sites More sharing options...
fossilsonwheels Posted January 22, 2022 Author Share Posted January 22, 2022 A few Bullhead teeth to add. Here’s a large one from the Cretaceous of Russia Heterodontus sp Cretaceous Tambov Region Russia Link to comment Share on other sites More sharing options...
fossilsonwheels Posted January 22, 2022 Author Share Posted January 22, 2022 Another large Bullhead tooth and our only Tasmanian shark tooth. Heterodontus cainozoicus Miocene Fossil Bluff Sandstone Tasmania Link to comment Share on other sites More sharing options...
digit Posted January 22, 2022 Share Posted January 22, 2022 12 hours ago, fossilsonwheels said: Another large Bullhead tooth and our only Tasmanian shark tooth. Very cool! Who would have thought Tasmania had more than just devils. Cheers. -Ken Link to comment Share on other sites More sharing options...
fossilsonwheels Posted January 23, 2022 Author Share Posted January 23, 2022 15 hours ago, digit said: Very cool! Who would have thought Tasmania had more than just devils. Cheers. -Ken That was my first thought too Ken lol Link to comment Share on other sites More sharing options...
Searcher78 Posted February 24, 2022 Share Posted February 24, 2022 I’m still waiting to find my first lateral tooth, but here is my first tooth from the Aquia in Maryland. 1 Link to comment Share on other sites More sharing options...
hokietech96 Posted February 24, 2022 Share Posted February 24, 2022 From Shark Tooth Hill Matrix 2 Link to comment Share on other sites More sharing options...
fossilsonwheels Posted February 24, 2022 Author Share Posted February 24, 2022 1 hour ago, Searcher78 said: I’m still waiting to find my first lateral tooth, but here is my first tooth from the Aquia in Maryland. Very nice tooth !! Congrats. Link to comment Share on other sites More sharing options...
fossilsonwheels Posted February 24, 2022 Author Share Posted February 24, 2022 6 minutes ago, hokietech96 said: From Shark Tooth Hill Matrix STH matrix is the best way I know of to find Heterodontus teeth. Great colors. Link to comment Share on other sites More sharing options...
siteseer Posted October 23, 2022 Share Posted October 23, 2022 Yeah, great color combo on that one. I don't think I have any STH tooth with that color combo. Link to comment Share on other sites More sharing options...
fossilsonwheels Posted November 16, 2022 Author Share Posted November 16, 2022 Heterodontus lerichei Paleocene Aquia Formation Maryland We got this pair of lateral teeth from @sharkdoctor. Our only Paleocene Bullheads. Link to comment Share on other sites More sharing options...
fossilsonwheels Posted November 16, 2022 Author Share Posted November 16, 2022 1 Link to comment Share on other sites More sharing options...
fossilsonwheels Posted November 16, 2022 Author Share Posted November 16, 2022 Heterodontus vincenti Eocene Egem Belgium Link to comment Share on other sites More sharing options...
fossilsonwheels Posted January 14, 2023 Author Share Posted January 14, 2023 Heterodontus lerichei Paleocene Aquia Formation Liverpool Point Maryland I received some Aquia Formation matrix from @sharkdoctor. Easily the best find so far has been 3 anterior Heterodontus teeth in pretty good condition. 2 Link to comment Share on other sites More sharing options...
David in Japan Posted January 14, 2023 Share Posted January 14, 2023 Heterodontus sp. Goshora formation 100MYA, late Cretaceous, Japan 1 ~~~~~~~~~~~~〇~~~~~~~~~~~~~ Warmest greetings from Kumamoto、 Japan Link to comment Share on other sites More sharing options...
Doctor Mud Posted January 14, 2023 Share Posted January 14, 2023 Great thread. Here’s one - the only one I’ve found at this site. Miocene. New Zealand. Here’s a photo of the Port Jackson shark Heterodontus portjacksoni from Australia and its jaw. I was surprised to read that it is as far south as Tasmania! Fun fact. This shark can turn its stomach inside out and spit it out its mouth to get rid of unwanted items. Sure to be a conversation stopper at the dinner table 1 Link to comment Share on other sites More sharing options...
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