Roubidoux Formation Explained

Roubidoux Formation
Type:	Formation
Age:	Ordovician
Period:	Ordovician
Prilithology:	Sandstone
Otherlithology:	dolomite, chert
Namedfor:	Roubidoux Creek, Texas and Pulaski counties, Missouri^[1]
Region:	Missouri
Country:	United States
Coordinates:	36.9°N -92.57°W
Underlies:	Jefferson City Formation in the Missouri Ozarks
Overlies:	Gasconade Formation^[2]
Thickness:	100 to 300 feet

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

Paleofauna

Monoplacophora

• Kirengella

K. oregonensis^[3]

• Wildernessia

W. inexpectans^[3]

Gastropoda

• Lecanospira

L. perplana ^[4]

See also

• List of fossiliferous stratigraphic units in Missouri
• Paleontology in Missouri

References

• Web site: Fossilworks: Gateway to the Paleobiology Database. ((Various Contributors to the Paleobiology Database)). 17 December 2021.

Notes and References

1. Thompson, Thomas L., Paleozoic Succession in Missouri: Part 2 Ordocician System, Report of Investigation No. 70, 1991, Missouri Department of Natural Resources, Rolla, MO, pp. 30-37
2. http://www.dnr.mo.gov/geology/geosrv/ogc/docs/RI-073.pdf 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 244-245
3. Stinchcomb . Bruce . Angeli . Nicholas . New Cambrian and Lower Ordovician monoplacophorans form the Ozark Uplift, Missouri . Journal of Paleontology . 2002 . 76 . 6 . 965–974.
4. Heller, Robert L.,(1954). Stratigraphy and Paleontology of the Roubidoux Formation of Missouri, Volume 35, Second Series, 1954, State of Missouri, Division of Geological Survey and Water Resources, Rolla, Missouri. Pp.37-38 & Appendix B-Plate XIIIhttps://share.mo.gov/nr/mgs/MGSData/Books/Volumes/Stratigraphy%20and%20Paleontology%20of%20the%20Roubidoux%20Sucession%20in%20Missouri/V-035.pdf