Kokomo Formation

The Kokomo Formation is a geologic formation in Indiana. It preserves fossils dating back to the Silurian period, most notably sea scorpions.

Eurypterids

 * Carcinosoma newlini
 * Kokomopterus longicaudatus 
 * Erieopterus limuloides 
 * Erieopterus ranilarva
 * Onychopterella kokomensis 
 * Leperditia ohioensis

Brachiopods

 * Lingula sp.
 * Pentamerus divergens
 * Schuchertella interstriata

Cnidarians

 * Halysites labyrnthicus