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Fossil teeth: Sevengill Cow Shark
Notorynchus sp.
38.6747, -76.5313
Field Notes
Description:
These fossil cow shark teeth are from a sevengill cow shark (Notorynchus sp.), although they are similar in appearance to sixgill cow shark teeth (Hexanchus sp.). The smaller specimen is an upper lateral tooth; the larger specimen is a lower lateral tooth.
Habitat:
Calvert Cliffs (Maryland USA), "fossiliferous deposits [that] belong to the Chesapeake Group of Miocene age geological strata in the Atlantic Coastal Plain region." Source Credit: http://www.mgs.md.gov/esic/brochures/ccliffs.html
Notes:
Fossil collecting tip: Plan to visit coastal marine fossil collecting localities during low tide. Consult a tide table such as the "NOAA Tide Predictions" Web page: http://tidesandcurrents.noaa.gov/tide_predictions.shtml "tideApp" provides free mobile tide predictions: http://tideapp.com/
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