Maryland Miocene Fossils

I found these Miocene marine fossils in 1966, along the shore of the Chesapeake Bay, in Calvert County. At the time, the locality was in Camp Theodore Roosevelt, belonging to the Boy Scouts of America. The deposits were within the Chesapeake Group. The formations within the Chesapeake Group are, from oldest to youngest, the Calvert, Choptank, and St. Marys. The Maryland Geological Survey has published a pamphlet, Miocene Sharks Teeth of Calvert County. Fossils of Calvert Cliffs is another on-line document describing the fossils from this area. My main references are Miocene (Maryland Geological Survey, 1904) and Miocene Fossils of Maryland, by Harold E. Vokes (Maryland Geological Survey, 1957). A recent, less technical reference is Fossil Collecting in the Mid-Atlantic States, by Jasper Burns (Johns Hopkins University Press, Baltimore 1991). The Key to the Common Genera of Neogene Shark Teeth, by Robert Purdy of the National Museum of Natural History is a useful online resource for identifying fossil shark teeth. Another website with information about fossil sharks and shark teeth, particularly the Lee Creek fauna, is . The website of the Calvert Marine Museum has a lot of information on the Miocene fauna of the Calvert Cliffs area. They even sponsor fossil field trips. Please note that I have not visited the area since 1966, so I can't provide any current information on where to collect.

Click on the links below to view the specimens.

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Last modified: May 27, 2001. Send comments to