gturner333 Posted June 3, 2017 Share Posted June 3, 2017 I received some matrix from the Lance Creek Formation, Late Maastrichtian, Wyoming, which shares much fauna with the Hell Creek formation. I have found what I think are 4 croc teeth and what I hope is a therapod tooth (piece). The serrations on the therapod (hopefully) tooth is about 5/mm on the basal side and much finer on the other. The picture doesn't show the finer serrations well, but you can feel them by running your fingernail across it. The hash marks are 1mm. Am I right on any of this? Link to comment Share on other sites More sharing options...
JohnBrewer Posted June 3, 2017 Share Posted June 3, 2017 I think you're right but @Troodon and others will help you. John Map of UK fossil sites Link to comment Share on other sites More sharing options...
FossilDudeCO Posted June 3, 2017 Share Posted June 3, 2017 @jpc can help as well! I think you are right for croc teeth though! Link to comment Share on other sites More sharing options...
Troodon Posted June 3, 2017 Share Posted June 3, 2017 I believe they are not croc teeth but from the alligator Brachychampsa. That is a theropod tooth what is the length of it. Cannot figure out your scale 1 Link to comment Share on other sites More sharing options...
FossilDudeCO Posted June 3, 2017 Share Posted June 3, 2017 9 minutes ago, Troodon said: That is a theropod tooth what is the length of it. Cannot figure out your scale Scale is in mm Troodon. about 3mm on that theropod tooth. Link to comment Share on other sites More sharing options...
gturner333 Posted June 3, 2017 Author Share Posted June 3, 2017 Sorry about that. Fossildude is correct. The hashmarks are 1mm. Any guesses as to what kind of therapod? It would have to be pretty small or is just the tip of the tooth? Link to comment Share on other sites More sharing options...
Troodon Posted June 3, 2017 Share Posted June 3, 2017 Isolated small theropod teeth are always difficult but my guess is that it's from a Tyrannosaurid. Serrations compare well to my Nano serrations other than size. Its probably an infant tooth, my smallest Rex tooth is around 5mm. Link to comment Share on other sites More sharing options...
gturner333 Posted June 3, 2017 Author Share Posted June 3, 2017 thanks for all the help. May it ever be so humble, my first theropod tooth. Pardon my lousy spelling. Link to comment Share on other sites More sharing options...
jpc Posted June 3, 2017 Share Posted June 3, 2017 I generally don't ID teeth from the Lance beyond the order level, except mammals. I can claim laziness or simply satisfaction and too many other things too do. Yup, theropod and crocodilian teeth. Troodon... How do brachychampsa and leidysuchus teeth differ? Can we say that croc teeth are generally pointier? Link to comment Share on other sites More sharing options...
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