Middlesex Shale

Middlesex Shale Stratigraphic range: Frasnian
Type	Formation
Unit of	Sonyea Group
Underlies	Cashaqua Shale or Pulteney shale
Location
Region	New York
Country	United States

The Middlesex Shale is a geologic formation in New York. It preserves fossils dating back to the Devonian period.