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Here are two links to posts dealing with how to post pictures on Black River Fossils forums.
1. How to Post Pictures on Black River Fossils Forums by ditchweezil
2. How to Post Pictures on Black River Fossils Forums by Daryl
I had a fantastic day at GMR yesterday finding only my second parotodus tooth almost a year to day from my first one last September at the same location. (pics can be seen at: www.flickr.com/photos/reeltooth/) My question is why do you suppose these teeth have such a unique shape? With the blade being so thick at the crown and being very hooked added to such a massive root, do you think these sharks were designed to bite, grasp and hold prey in their mouths, as opposed to a bite and release tactic that a great white employs?
Gerald Reel
That's a really nice parotodus. I bet your eyes about popped out of their sockets when you first saw it!
I've read that Parotodus is a decendent of Otodus, so the curved teeth were probably an attempt to improve on what Otodus did. This particular design, though very cool to us, was probably not as successful since the species went extinct in the pliocene. I wonder if it would have done better with serrations like the Trigonotodus form of Alopias grandis? I've never seen a serrated parotodus.