Roubidoux Formation

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

Roubidoux Formation Stratigraphic range: Ordovician
Outcrop of Roubidoux sandstone in the Missouri Ozarks
Type	Formation
Underlies	Jefferson City Formation in the Missouri Ozarks
Overlies	Gasconade Formation[1]
Thickness	100 to 300 feet[2]
Lithology
Primary	Sandstone
Other	dolomite, chert
Location
Coordinates	36.90°N 92.57°W
Region	Missouri, Virginia
Country	United States
Type section
Named for	Roubidoux Creek, Texas and Pulaski counties, Missouri[2]

Paleofauna

Monoplacophora

• Kirengella

K. oregonensis[3]

• Wildernessia

W. inexpectans[3]

See also

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

References

1. 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
2. Thompson, Thomas L., Paleozoic Succession in Missouri: Part 2 Ordocician System, Report of Investigation No. 70, 1991, Missouri Department og Natural Resources, Rolla, MO, pp. 30-37
3. Stinchcomb, Bruce; Angeli, Nicholas (2002). "New Cambrian and Lower Ordovician monoplacophorans form the Ozark Uplift, Missouri". Journal of Paleontology. 76 (6): 965–974.

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 31 July 2014. Retrieved 22 June 2014.