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

Lucas Formation
Stratigraphic range: Middle Devonian
Lucas Dolomite (Middle Devonian; quarry near Junction, Ohio)
TypeFormation
Unit ofDetroit River Group
UnderliesAnderdon Limestone and Dundee Formation
OverliesAmherstburg Formation
Location
RegionMichigan and Ohio
CountryUnited States

Fossil content edit

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

References edit

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