Derona an Formation Falls of the Ohio and in the County Clark Co Indiana Victor W Lyman &c 1870 Sydney D Lyon, CE 1869 Sand slon + shale Ferruginous Leme slon Conchites leme slon Black Slats Encrinital Bca Concho Shell + Fish Bca Upper Cherty-Bca by Middle Lower Sperfer Bca Bryozoa Bc Nucleosemis Bca Strophodonta Bca Jumbo Bca Belita name Sperfa gregaria Wheti Upper Black Middle Brown Lower Catenipora Halgoites Bed Sand slon + Shale Omitte Black Slats Encrinital Bca Omitted Hydranli Sperfer Bca Omitted Nucleosemis Bca Omitted Jumbo Bed Coral Beds Catenipora Bca 2804 DOCUMENT NO. 89 Invertebrate Paleontology Yale Peabody Museum