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

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.

Fossils

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

Rays and other cartilaginous fish

Bony fish

Cetaceans

Pinnipeds

Crocodilians

Invertebrates

Terrestrial mammals

Birds

See also

References

  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.
Categories