Roubidoux Formation

The Roubidoux Formation is a geologic formation in the Ozarks of Missouri. 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 / 36.90; -92.57
Region	Missouri
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]

Gastropoda

• Lecanospira

L. perplana ^[4]

See also

• Paleontology portal

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