Important Fossil-Bearing Strata in Kentucky

Geologic Time in Kentucky (Kentucky Geological Survey)

Ordovician Age

• Clays Ferry Formation
• Lexington Limestone

Silurian Age

• Laurel
• Brassfield

Devonian Age

Mississippian Age

• Paragon Formation
• Slade Limestone
• Fort Payne Formation
• Borden Formation

Pennsylvanian Age

• Magoffin Member
• Kendrick Member
• Four Corners Formation