retiredFossil Posted November 16, 2023 Share Posted November 16, 2023 My understanding is that lower teeth for Carcharodon hastalis differ from Isurus Oxyrinchus in that the Isurus crown is slenderer than Carcharodon. What are some of the other distinguishing differences? Is the image of a Carcharodon hastalis or Isurus Oxyrinchus fossil? Link to comment Share on other sites More sharing options...
debivort Posted November 16, 2023 Share Posted November 16, 2023 I would call this an oxyrinchus. Slender, lower hastalisis are less slanted, I believe. And the the root lobes that look like a butterfly nut point me to oxyrinchus. 1 Link to comment Share on other sites More sharing options...
retiredFossil Posted November 16, 2023 Author Share Posted November 16, 2023 Thank you debivort! Link to comment Share on other sites More sharing options...
Fin Lover Posted November 16, 2023 Share Posted November 16, 2023 I agree with Isurus. Here are some differences, from A Beachcomber's Guide to Fossils, by Bob, Pam and Ashby Gale. 1 Fin Lover My favorite things about fossil hunting: getting out of my own head, getting into nature and, if I’m lucky, finding some cool souvenirs. Link to comment Share on other sites More sharing options...
retiredFossil Posted November 16, 2023 Author Share Posted November 16, 2023 I have Beachcombers Guide, but somehow missed the cited entry. Thank you, very helpful. 1 Link to comment Share on other sites More sharing options...
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