Below is a small sampling of some of the various shark teeth that can be found at the Green Mill Run stream in Greenville, NC. I've only been to the stream four times, but have managed to find a decent sampling of specimens.

From the Pliocene:

From the Cretaceous:

From the Pliocene:

From the Cretaceous:

Below are a couple pictures of my finds from a visist to GMR in Oct 2006. As you can see, I faired pretty well with a few Great Whites (top row), followed by an assortment of Crow Sharks (second row), followed by some drum fish teeth, Sand Tigers, and even a large Tiger - Galeocerdo cuvier (bottom row), some Mako's, and a piece of Megalodon.

Below is the rest of my finds from the same trip. Those orange long things in the top of the pic are belemites. As you can see from the picture, most of the finds are a bit worn and broken - typical of a days work, but still always fun because you never know what might show up in your screen!