Stromatolite, layers of cyanobacteria
Bob Campbell Geology Museum 420 million years old; Donated: Vern Freeman.
Nautiloidea sp., fragmacone cast
Bob Campbell Geology Museum 430 million years old; Formation: Jeffersonville Limestone.
Sea scorpion (Eurypterus remipes)
Bob Campbell Geology Museum 420 million years old; Formation: Fiddlers Green Formation; Phelps member.
Leperditia scalaris, limestone frag. leach with single ostrecode, valve exposed
Bob Campbell Geology Museum Formation: Akron Dolostone Formation.