Cobourg Limestone

The Cobourg Formation is a geologic formation in Ontario. It preserves fossils dating back to the Ordovician period. Technically the formation extends into New York State with Canadian section called Lindsay Formation. The formation was named by Raymond (1921). The Cobourg formation was estimated to have a total thickness of about 70 m.^[1]

Cobourg Formation
Stratigraphic range: Ordovician
Type	Formation
Location
Region	Ontario
Country	Canada

Fossil found in the Cobourg Formation

• An example of a trilobite that lived during the Upper Ordovician, Flexicalymene croneisi. Found in 1941, in the Cobourg formation.^[2]

See also

• Earth sciences portal
• Ontario portal
• Paleontology portal

• Colborne quarry: a limestone near Lake Ontario and is located in the Cobourg Formation.
• List of fossiliferous stratigraphic units in Ontario