11. Conodonts from subsurface Champlainian (Ordovician) rocks of eastern Indiana Author/Creator: Ethington, Raymond Lindsay, 1929- Publication/Creation: Bloomington, Ind. : Indiana Department of Natural Resources, Geological Survey, 1986 Resource Type: Book Access & Availability: Loading
12. A correlation of Ordovician rocks in the British Isles Publication/Creation: Edinburgh : Scottish Academic Press, 1972 Resource Type: Book Access & Availability: Loading
13. The Crinoidea of Anticosti Island, Québec (late Ordovician to early Silurian) Author/Creator: Ausich, William I. 1952- (William Irl) Publication/Creation: Calgary : Canadian Society of Petroleum Geologists, [2010] Resource Type: Book Access & Availability: Loading
14. Cross sections of Lower Ordovician carbonate depositional lithofacies and Mississippi Valley-type zinc-and iron-sulfide mineralization in the Caulfield district, east-central part of Harrison 1⁰ x 2⁰ quadrangle, Arkansas and Missouri Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading