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Lucas Formation
Stratigraphic range: Middle Devonian
Lucas Dolomite (Middle Devonian; quarry near Junction, Ohio)
Type Formation
Unit of Detroit River Group
Underlies Anderdon Limestone and Dundee Formation
Overlies Amherstburg Formation
Location
Region Michigan and Ohio
Country United States

The Lucas Formation is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period.

Fossil content

Cnidarians
Genus Species Presence Material Notes Images
Siphonophrentis S. gigantea [1] A coral

References

  1. ^ McCall, Christian R (16 October 2018). "Exceptional new fossil of Siphonophrentis gigantea". Retrieved 25 July 2022.