TyBoy Posted August 23, 2018 Share Posted August 23, 2018 I believe I know the answers but like to confirm the ID's and raise a red flag if appropriate. Seller is offering the following from the Judith River Formation of Montana Saurnitholestes Tooth 1/4" Aublysodon Tooth 3/4" Daspletosaurus tooth 1.4" Daspletosaurus tooth 7/8" Link to comment Share on other sites More sharing options...
thelivingdead531 Posted August 23, 2018 Share Posted August 23, 2018 @TyBoy Do you have pictures? Link to comment Share on other sites More sharing options...
gigantoraptor Posted August 23, 2018 Share Posted August 23, 2018 I can't see photo's either, but can already say Aublysodon is not considered a valid genus anymore. 2 Link to comment Share on other sites More sharing options...
gigantoraptor Posted August 23, 2018 Share Posted August 23, 2018 Okay, now I can see pictures. The first one will be hard without comparing the serration density. (I saw this in a post of @Troodon, so he might be a beter help than me.). Aublysodon is not a valid genus anymore, so it is a Tyrannosaurid indet. Tooth. The two last ones are also Tyrannosaurid indet. since there are two genera described in this formation, Daspletosaurus and Gorgosaurus and there is no way to tell apart the teeth of both species. 4 Link to comment Share on other sites More sharing options...
Troodon Posted August 23, 2018 Share Posted August 23, 2018 The first tooth is a Dromaeosaurid hard to determine if its Saurornitholestes with that photo. I will look at the listing to see if I can see the denticles. Like gigantoraptor said Aublysodon is an invalid taxon and should be better described as Tyrannosaurid indet. The last two are also Tyrannosaurid indet. Again no Tyrannosaurids gave been described from the JRF. Either Daspletosaurus or Gorgosaurus cannot differentiate between the two 4 Link to comment Share on other sites More sharing options...
Troodon Posted August 23, 2018 Share Posted August 23, 2018 To determine if that Dromaeosaurid is a Saurornitholestes you have to examine the denticles under magnification. The very tip of the denticles should be apically directed. Could not determine that from the pictures in the listing. 2 Link to comment Share on other sites More sharing options...
TyBoy Posted August 23, 2018 Author Share Posted August 23, 2018 Thank you for confirming my beliefs. Guess it's a red flag for others for at least 3 of the teeth. 1 Link to comment Share on other sites More sharing options...
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