The Theodosia Formation is a geologic formation in Missouri. It preserves fossils dating back to the Ordovician period.

Theodosia Formation
Stratigraphic range: Ordovician
TypeFormation
Location
RegionArkansas, Missouri
CountryUnited States
Type section
Named forTheodosia, Ozark County, Missouri[1]
Named byJames Shelley Cullison[2]

The Rich Fountain Formation was proposed in 1944 as the equivalent of the lower part of the Jefferson City Formation in a new Jefferson City Group. The Theodosia Formation was proposed as the equivalent of the upper Jefferson City and the lower portion of the overlying Cotter Formation.[1] This formation was also proposed for use in Arkansas by the original author of the name, but it was never used by other workers in Arkansas.

See also

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References

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  1. ^ a b Thompson, Thomas L., 2001, Lexicon of Stratigraphic Nomenclature in Missouri, Missouri Department of Natural Resources, Division of Geology and Land Survey, Report of Investigation Number 73, p 239 and 287
  2. ^ Cullison, J.S. (1944). "The stratigraphy of some Lower Ordovician formations of the Ozark uplift". University of Missouri School of Mines and Metallurgy Bulletin, Technical Series. 15 (2): 7, 11, 15, 16, 17, 21, 23, 25–32, pl. 2.