Hi Lisa @llundgren – I know that many of the dentitions that are on display are composite dentitions, not associated. I am thinking of the makos (shortfin, broad-tooth, and one other species as examples). There are some known associated dentitions for sure – the Parotodus and maybe a great white – I’ll have to check on the latter. The Paratodus that is displayed is a cast of the original, which was donated to the Smithsonian by George Powell. The Smithsonian made the cast. Let me get back to you on your questions when I find out more facts and am not just going off my memory.