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Roubidoux Formation facts for kids

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Roubidoux Formation
Stratigraphic range: Ordovician
Roubidoux sandstone bluff.JPG
Outcrop of Roubidoux sandstone in the Missouri Ozarks
Type Formation
Underlies Jefferson City Formation in the Missouri Ozarks
Overlies Gasconade Formation
Thickness 100 to 300 feet
Lithology
Primary Sandstone
Other dolomite, chert
Location
Coordinates 36°54′N 92°34′W / 36.90°N 92.57°W / 36.90; -92.57
Region Missouri, Virginia
Country United States
Type section
Named for Roubidoux Creek, Texas and Pulaski counties, Missouri

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

Paleofauna

Monoplacophora

  • Kirengella
K. oregonensis
  • Wildernessia
W. inexpectans
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