Route 20A & Route 39, Bridge crossing Fall Brook,
Geneseo, New York, Livingston County
The
stretch of Fall Brook exposes the upper portion of the Middle Devonian (Givetian)
Moscow Formation (Windom and Kashong Shale members) as well as the
overlying Upper Devonian (Frasnian) Genesee Group. All units are rich in
fossils and a diverse fauna including trilobites, brachiopods, ammonoids,
corals, bryozoans and other can be collected during the trip.