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Hi, @brooke-woods – How were you able to identify this as a pufferfish tooth? Do you have any other images of the specimen?
@vperez @fauve-wilson – any insight on the tooth? I’m getting up to speed on the rays and sharks but this is a new one for me!

This does indeed look like a pufferfish mouth plate. This is a really small fragment of the whole mouth plate though. To be honest, I don’t remember how to tell the difference between pufferfish and porcupinefish. Fortunately, they are in the same order, so perhaps the safest bet would be to only identify it to Tetraodontiformes.