Lorraine Group

Lorraine Group
Lorraine Group
Stratigraphic range: Ordovician
	Pyritized trilobita in Frankfort Shale, Lorraine Group
Type	Group
Sub-units	Utica Shale, Frankfort Shale, and the Whetstone Gulf Formation
Overlies	Trenton Group
Location
Region	Tennessee, Kentucky, Indiana, Ohio, New York, Ontario, Quebec
Country	Canada and United States

Last updated December 04, 2025

The Lorraine Group is a geologic group in the northeastern United States and southeastern Canada.

It preserves fossils dating back to the Ordovician Period.

The group is host to pyritized trilobites and other fossils in New York including the Beecher's Trilobite Bed.^[1]

References

1 2 Farrell, Úna C., et al., Beyond Beecher's Trilobite Bed: Widespread pyritization of soft tissues in the Late Ordovician Taconic foreland basin, Geology, v. 37 no. 10 p. 907-910

Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database" . Retrieved 17 December 2021.

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[GSA-1] 1 2 Farrell, Úna C., et al., Beyond Beecher's Trilobite Bed: Widespread pyritization of soft tissues in the Late Ordovician Taconic foreland basin, Geology, v. 37 no. 10 p. 907-910

[1]

Lorraine Group

See also

References