Lucas Formation

Geologic formation in Michigan
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

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.
  • Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
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Chronostratigraphy of Ohio
Ph
Pz
P
Cisuralian
C
Gzhelian
Kasimovian
Moscovian
M
Viséan
Tournaisian
D
Upper
Famennian
Frasnian
Middle
Givetian
Eifelian
Lower
Emsian
Lochkovian
S
Pridoli
Ludlow
Ludfordian
Gorstian
Wenlock
Homerian
Llandovery
O
Upper
Middle
Є
Furongian
Z
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Ph
Cz
Q
Pleistocene
indet.
Glacial till
Mz
J
indet.
Pz
C
indet.
M
D
Upper
indet.
Frasnian
Middle
Givetian
Lower
S
indet.
Llandovery
O
Upper
Sandbian
Middle
Darriwilian
Lower
Є


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