Roubidoux Formation

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

Monoplacophora

 * Kirengella
 * K. oregonensis


 * Wildernessia
 * W. inexpectans

Gastropoda

 * Lecanospira
 * L. perplana