Austin83 Posted July 26, 2021 Share Posted July 26, 2021 (edited) I found about 20 shark teeth in a creek in North Texas, and I’m having some trouble IDing the teeth in the attached photo. They are about 1” in length. Mako or maybe a White Shark? Any help is greatly appreciated. Edited July 26, 2021 by Austin83 Link to comment Share on other sites More sharing options...
Al Dente Posted July 26, 2021 Share Posted July 26, 2021 (edited) These are probably Cretaceous, too old to be mako or great white. Shark teeth are difficult to identify without the roots. Edited July 26, 2021 by Al Dente 1 Link to comment Share on other sites More sharing options...
ThePhysicist Posted July 26, 2021 Share Posted July 26, 2021 These are almost definitely Cretaceous as @Al Dente postulated. Are these from Post Oak Creek? (If not, don't feel pressured to divulge your honey hole .) Second from the right could be goblin, the rest could be Cretolamna. Can't be 100% certain without the whole tooth. "Argumentation cannot suffice for the discovery of new work, since the subtlety of Nature is greater many times than the subtlety of argument." - Carl Sagan "I was born not knowing and have had only a little time to change that here and there." - Richard Feynman Collections: Hell Creek Microsite | Hell Creek/Lance | Dinosaurs | Sharks | Squamates | Post Oak Creek | North Sulphur River | Lee Creek | Aguja | Permian | Devonian | Triassic | Harding Sandstone Instagram: @thephysicist_tff Link to comment Share on other sites More sharing options...
Austin83 Posted July 26, 2021 Author Share Posted July 26, 2021 1 minute ago, ThePhysicist said: These are almost definitely Cretaceous as @Al Dente postulated. Are these from Post Oak Creek? (If not, don't feel pressured to divulge your honey hole .) Second from the right could be goblin, the rest could be Cretolamna. Can't be 100% certain without the whole tooth. Yep, found in the popular Post Oak Creek 1 Link to comment Share on other sites More sharing options...
ThePhysicist Posted July 26, 2021 Share Posted July 26, 2021 Just now, Austin83 said: Yep, found in the popular Post Oak Creek No white sharks or makos there, unfortunately. The teeth are drawn from the Eagle Ford Group which is Late Cretaceous in age (~90 million years old). The most common genera are: Scapanorhynchus (goblin), Squalicorax (crow), Cretolamna, Cretodus, Cretoxyrhina (ginsu), and Ptychodus. 99% of the teeth you'll find there will be one of those. "Argumentation cannot suffice for the discovery of new work, since the subtlety of Nature is greater many times than the subtlety of argument." - Carl Sagan "I was born not knowing and have had only a little time to change that here and there." - Richard Feynman Collections: Hell Creek Microsite | Hell Creek/Lance | Dinosaurs | Sharks | Squamates | Post Oak Creek | North Sulphur River | Lee Creek | Aguja | Permian | Devonian | Triassic | Harding Sandstone Instagram: @thephysicist_tff Link to comment Share on other sites More sharing options...
Austin83 Posted July 26, 2021 Author Share Posted July 26, 2021 4 minutes ago, ThePhysicist said: No white sharks or makos there, unfortunately. The teeth are drawn from the Eagle Ford Group which is Late Cretaceous in age (~90 million years old). The most common genera are: Scapanorhynchus (goblin), Squalicorax (crow), Cretolamna, Cretodus, Cretoxyrhina (ginsu), and Ptychodus. 99% of the teeth you'll find there will be one of those. Great, thanks for the information! Here is the rest of what we found this morning. Again, thanks for the help. 1 Link to comment Share on other sites More sharing options...
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