Tj1977 Posted December 20, 2022 Share Posted December 20, 2022 I found this in the Judith River Formation years ago but have never got it fully identified as a Hadrosaur or Ceratopsian jaw piece. Any help will be appreciated. Link to comment Share on other sites More sharing options...
hadrosauridae Posted December 20, 2022 Share Posted December 20, 2022 (edited) Looks like Hadrosaur tooth battery to me. But to be fair, I havent spent a lot of time studying ceratopsian dentary morphology. Edited December 20, 2022 by hadrosauridae "There is no shortage of fossils. There is only a shortage of paleontologists to study them." - Larry Martin Link to comment Share on other sites More sharing options...
Troodon Posted December 20, 2022 Share Posted December 20, 2022 With this specimen best way to determine which one is to look at the cross-section and labial side, not the lingual side with the grooves, which everyone does. Smaller fragments become increasingly more difficult C and D in the illustration look like a good match Bell et al. (2009) A Ceratopsian, much more going on here. 1 Link to comment Share on other sites More sharing options...
Tj1977 Posted December 26, 2022 Author Share Posted December 26, 2022 Thank you for the help. Does anyone else have an idea if it's hadrosaur or Ceratopsian Link to comment Share on other sites More sharing options...
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