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Calvert Formation

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The Calvert Formation is a geologic formation in Maryland, Virginia, and Delaware. It preserves fossils dating back to the early to middle Miocene epoch of the Neogene period. It is one of the three formations which make up the Calvert Cliffs, all of which are part of the Chesapeake Group.

Calvert Formation
Stratigraphic range: Miocene
Outcrops of the Calvert Formation at the Calvert Cliffs State Park
TypeFormation
Unit ofChesapeake Group
UnderliesChoptank Formation
OverliesOld Church Formation
Location
Region Maryland, Virginia, Delaware
CountryUnited States
Type section
Named forCalvert County

Fossils

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Carcharocles megalodon partially buried in gravel along the Calvert Cliffs, Maryland
 
Fossils from the Calvert Formation, Zone 10, Calvert Co., MD (Miocene)

The Calvert Formation is extremely fossiliferous. Some of the fossil species represented include the following:[1][2]

Sharks

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Rays and other cartilaginous fish

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Bony fish

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Cetaceans

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Pinnipeds

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Crocodilians

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Invertebrates

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Terrestrial mammals

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Birds

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See also

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References

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  1. ^ Godfrey, Stephen J., ed. (2018-09-25). "The Geology and Vertebrate Paleontology of Calvert Cliffs, Maryland, USA". Smithsonian Contributions to Paleobiology (100): 2–274. doi:10.5479/si.1943-6688.100. ISSN 1943-6688.
  2. ^ "Paleobiology Collections Search". collections.nmnh.si.edu. Retrieved 2020-08-14.
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