Mikrogeophagus Posted April 13, 2022 Share Posted April 13, 2022 Just a quick post. Was picking through some washed gravel I got from Post Oak Creek back in the winter when I stumbled upon this guy. I'm surprised my screens were fine enough to catch him. Taking clear pics was a bit difficult so apologies for blurriness. I'm curious about what sort of shark would have a tooth of this size. Was it just a tiny pup or were there just really small species? The hashmarks are millimeters. I might make a post about my POC micro finds once I finish going through it and identifying stuff. It's a long process, but there are plenty of fun finds to be had. Thanks for reading! 2 Link to comment Share on other sites More sharing options...
ClearLake Posted April 14, 2022 Share Posted April 14, 2022 That is a great looking tooth, especially considering how small it is. Good catch! I found some pretty small ones also in Gainesville , Fl. matrix. Always neat to find. 1 Link to comment Share on other sites More sharing options...
Jared C Posted April 14, 2022 Share Posted April 14, 2022 That nutrient groove makes me think it’s a rear Scapanorynchus tooth. Those funny cusp shapes are giving me a tinge of doubt though, can’t remember if there are other less common Cretaceous sharks with a nutrient groove from the Eagle Ford 2 “Not only is the universe stranger than we think, it is stranger than we can think” -Werner Heisenberg Link to comment Share on other sites More sharing options...
Fossildude19 Posted April 14, 2022 Share Posted April 14, 2022 @MarcoSr @Al Dente @sixgill pete @digit Catshark tooth maybe? Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
Al Dente Posted April 14, 2022 Share Posted April 14, 2022 The root looks different than most catshark roots, but there is a lot of variation in root shape among the catsharks. I think it looks more like some type of lamniform intermediate or posterior tooth. 2 Link to comment Share on other sites More sharing options...
Gizmo Posted April 14, 2022 Share Posted April 14, 2022 @sharkdoctor 1 Link to comment Share on other sites More sharing options...
digit Posted April 14, 2022 Share Posted April 14, 2022 If I'd seen this in younger matrix (Miocene to Pleistocene) I'd suggest that it was catshark (due to the distinct side cusps). I managed to get my hands on a bit of Cretaceous POC matrix and found it fascinating to pick. This was from a time before the changeover from lamniform sharks to carcharhiniform--a fascinating transition of tooth types. Before this switch shark teeth with side cusps were the norm and cuspless teeth with serrations (carcharhiniform) were the oddities. Today we basically have Carcharias taurus with side cusps and not a lot else. It is really wild to pick matrix where almost every tooth has side cusps. Cheers. -Ken 2 Link to comment Share on other sites More sharing options...
Coco Posted April 14, 2022 Share Posted April 14, 2022 Hi, It’s small and I may be wrong, but I find the root very thick and the cusps large for a Scyliorhinus, and I don’t distinguish the folds at the base of the crown that are usually found on the teeth of this shark. Maybe another Scyliorhinidae... Coco 2 ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
MarcoSr Posted April 14, 2022 Share Posted April 14, 2022 6 hours ago, Fossildude19 said: @MarcoSr @Al Dente @sixgill pete @digit Catshark tooth maybe? 6 hours ago, Al Dente said: The root looks different than most catshark roots, but there is a lot of variation in root shape among the catsharks. I think it looks more like some type of lamniform intermediate or posterior tooth. I agree with Eric that the root doesn't look like a catshark root. I also think that the tooth is an intermediate or posterior tooth of a sandtiger shark like Carcharias or a goblin shark (Scapanorhynchus). Marco Sr. 2 "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...
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