The Amature Paleontolgist's Guide to
A excellent spot for Miocene fossils. Stuff I've personally found includes shark teeth, crocodile teeth, fish teeth, giant scallops and coral. Stay out from under the cliffs as they are constantly eroding and very dangerous. Take some various sized sieves with you; it's the best way to search for shark teeth. If you want to make a day of it, afertwards you can head south to Solomon's Island. It'a a great place to have lunch, and the Calvert Marine Museum has an excellent collection of Miocene fossils from the area.
Directions: From Baltimore, take 97
south to Rt. 3 south, then take Rt. 4 south and follow the park signs.
From Washington DC, take Rt. 4 to Calvert County. It's a few miles after the nuclear power plant and before Solomon's Island. You'll see the signs for the park. Park in the park (There is a fee) and take a 1.8 mile nature hike down to the beach.