Top Qs
Timeline
Chat
Perspective
Pecatonica Formation
Geologic formation in the United States From Wikipedia, the free encyclopedia
Remove ads
The Pecatonica Formation is a geologic formation in Illinois. It preserves fossils dating back to the Ordovician period.
 | This article needs additional citations for verification. (October 2017) |
Remove ads
See also
References
Wikiwand - on
Seamless Wikipedia browsing. On steroids.
Remove ads