Cow Shark lower symphyseal (center) tooth. This is the second I've ever found. I have a lot more Megs.
UPDATE: The experts on Facebook tell me this is from a male Bluntnose sevengill cow shark.
Male Notorynchus sp. symphyseal teeth have a central conule on the axis of symmetry, females do not. Nice find!
The Bluntnose sevengill cow sharks, on the other hand, are aggressive sharks that prefer shallow near shore waters. They are often reported from depths of 3 - 6 fathoms .