By Myint Lwin Thein. / Nitecki, Matthew H. . Genre n-us-il / n-us-ky / Gastropoda, Fossil / Illinois / Gastropoda, Fossil and 7 more .

By Nitecki, Matthew H. . Genre n-us-il / n-cn-on / Ischadities stellatus / Paleobotany / Devonian and 7 more . Names ischadites / algae / receptaculites / fossils / mus and 74 more

By Nitecki, Matthew H. / Johnson, Markes E. . Genre Algae, Fossil / Paleobotany / Illinois / Paleobotany / Silurian and 2 more . Names axis / algae / fossils / green algae / america and 89 more

By Golden, Julia. / Nitecki, Matthew H. . Genre n-us--- / n-us-il / Echinodermata, Fossil / Catalogs and collections / Illinois and 8 more .