1. Early Middle Ordovician Chazy trilobites of New York Author/Creator: Shaw, Frederick C., 1937- Publication/Creation: Albany : University of the State of New York, State Education Dept., 1968 Resource Type: Book Access & Availability: Loading
2. Early Ordovician (Arenig) graptolites of the Cow Head Group, Western Newfoundland, Canada Author/Creator: Williams, S. Henry Publication/Creation: Calgary, Alta. : Canadian Society of Petroleum Geologists, 1988. St. John's, Nfld. : Geological Association of Canada, 1988 Resource Type: Book Access & Availability: Loading
3. Échinodermes de l'Ordovicien du Maroc ... Author/Creator: Chauvel, Jean-Jacques Publication/Creation: Paris : Editions du Centre National de la Recherche Scientifique, 1966 Resource Type: Book Access & Availability: Loading
4. Echinoderms from Middle and Upper Ordovician rocks of Kentucky Author/Creator: Parsley, Ronald L., author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1981 Resource Type: Book Access & Availability: Loading
5. Echinoderms from Middle and Upper Ordovician rocks of Kentucky : descriptions and illustrations of nine species of Stylophora, Paracrinoidea, Inadunata, Cyclocystoidea, and Rhombifera Author/Creator: Parsley, Ronald L. Publication/Creation: Washington, D.C. : U.S. G.P.O., 1981 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 1066 A-N. Access & Availability: Loading
6. Eden Shale bryozoans: a numerical study (Ordovician, Ohio Valley) Author/Creator: Anstey, Robert L. Publication/Creation: East Lansing : [Museum, Michigan State University], 1972 [i.e. 1973] Resource Type: Book Access & Availability: Loading
7. Ediacaran-Ordovician of East Laurentia : S.W. Ford memorial volume Publication/Creation: Albany : New York State Museum, State Education Dept., 2007 Resource Type: Book Access & Availability: Loading