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Aquia Formation

The Aquia Formation is a geologic sandstone formation that extends from the upper Chesapeake Bay to the James River near Hopewell, Virginia. It consists of clayey, silty, very shelly, glauconitic sand. Fossil records indicate that this stratigraphic unit was created during the Paleocene.

Geology
Lithology When uncovered, it appears dark green to gray-green, argillaceous, with well sorted fine- to medium-grained sand and locally indurated shell beds. It is between 0 and 100 feet thick in Maryland. A few hard streaks of shells or thin "rock" layers are often reported but appear to be more abundant in the sections south of the James River. The Aquia formation is broken down into two members: the lower Piscataway member and upper Paspotansa member. ==Age==
Age
The Aquia Formation is thought to be 59.0-55.5 million years old. ==Vertebrate paleobiota==
Vertebrate paleobiota
Bony fish Chondrichthyes Sharks Rays Birds Reptiles Crocodylomorphs Turtles Based on Weems (2014): Squamates Mammals Based on Rose (2000): == Invertebrate paleobiota ==
Invertebrate paleobiota
Molluscs ====Gastropods==== ====Bivalves==== ====Cephalopods==== Mammal and bird fossils are also uncommonly found in the formation. ==See also==
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