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21 Aug, 2019
By, Wikipedia
Potosi Formation
The
Potosi Formation
is a
geologic formation
in
Missouri
,
Illinois
and
Indiana
. It preserves
fossils
dating back to the
Cambrian
period
.
Paleofauna
Monoplacophora
Gayneoconus
G. echolsi
See also
List of fossiliferous stratigraphic units in Missouri
Paleontology in Missouri