ynot Posted February 5, 2015 Share Posted February 5, 2015 Hey All, Found in the cookie cutter matrix I got in jcbshark's last auction. Scale in photos is MM. No guesses as to the identity of this one. Also wanted to show a better photo of this dermal dentical. Is it possible to identify species? Tony 1 Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
Al Dente Posted February 5, 2015 Share Posted February 5, 2015 The tooth is from a catshark. The dermal denticle might be from a ray. 2 Link to comment Share on other sites More sharing options...
jpc Posted February 5, 2015 Share Posted February 5, 2015 Nice little specimens 1 Link to comment Share on other sites More sharing options...
ynot Posted February 5, 2015 Author Share Posted February 5, 2015 The tooth is from a catshark. The dermal denticle might be from a ray. I thought it looked like a strange shark tooth. Neat about the denticile also.- thanks for the knowledge. Nice little specimens Thanks Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
Search4 Posted February 6, 2015 Share Posted February 6, 2015 Cat shark!! I'm getting some of that matrix lol. Link to comment Share on other sites More sharing options...
siteseer Posted March 16, 2018 Share Posted March 16, 2018 On 2/5/2015 at 1:06 PM, Al Dente said: The tooth is from a catshark. The dermal denticle might be from a ray. Al Dente, I'm late on this but I think this tooth is more the size and shape of Triakis which would be a new genus to the Florida fossil record. I couldn't find a match in my references among the catsharks but it would seem too large to be one anyway. The average catshark tooth is about a millimeter long with few as large as 2mm. This tooth appears to be 4mm and 3mm wide. Jess 2 Link to comment Share on other sites More sharing options...
ynot Posted March 16, 2018 Author Share Posted March 16, 2018 @Al Dente @siteseer Order Carcharhiniformes COMPAGNO, 1973 Family Triakidae GRAY, 1851 Genus Palaeogaleus GURR, 1962 Palaeogaleus vincenti (DAEMERIES, 18888): Thanetian, Templeuve near Lille, France From jelasmo. My find does look much like the one on the right. But it also looks like the one on the left in this picture (which is within the size of My find.). Scyliorhinus gilberti CASIER, 1946/ premontreia gilberti: Ypresian, Fisher/ Sullivan Site, Nanjemoy Formation, Stafford County, Virginia Also from jelasmo. So now I am confused.... Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
Al Dente Posted March 16, 2018 Share Posted March 16, 2018 7 hours ago, siteseer said: Al Dente, I'm late on this but I think this tooth is more the size and shape of Triakis which would be a new genus to the Florida fossil record. I couldn't find a match in my references among the catsharks but it would seem too large to be one anyway. The average catshark tooth is about a millimeter long with few as large as 2mm. This tooth appears to be 4mm and 3mm wide. Jess As far as size goes, there are fossil catshark teeth that are larger than what Tony has found. Tony's looks closer to 3 mm wide to me. I have fossil ones that are over 4 mm wide (here). The base of Tony's tooth looks more catshark-like than Triakis-like. I've added the base of Pachyscyllium to Tony's picture as a comparison. Classification of catsharks and Triakids is a mess. Modern genetic studies have shown the Scyliorhinidae (catsharks) are a polyphyletic group with Proscyllium more closely related to the Triakids than other catsharks. Also the genus Triakis is polyphyletic with some species more closely related to Galeorhinus than to the other Triakis species. If they can't separate modern species, I don't have much hope for fossil ones. 2 Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted March 16, 2018 Share Posted March 16, 2018 No idea what anyone's talking about here, but they're very nice fossils. Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
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