WaterSport was out kayaking today and found these...

[Petespockets55]

Those are great "toothe's".
(Think I spotted your seven gill cowshark tooth at the top of the page in the 2x2. Nice well preserved example.)

And someone in Colorado is doing a double take on when viewing your baggies!

[jfines69]

Cool collections... I guess you are also a DDS - Dental Doctor for Sharks I'm not sure which one would be the most exciting to find... The fossilized teeth (that may be millions of years old) or the much fresher teeth that say a shark was here in the not to distant past!!!