Early Paleozoic biochronology of the Great Basin, western United States A-C Early Paleozoic biochronology, Great Basin, U.S.A Taylor, Michael E. editor. Geological Survey (U.S.) issuing body. text bibliography dcu 1997 monographic eng remote 1 online resource (viii, 115 pages) : illustrations. A. The Ibexian, lowermost series in the North American Ordovician / by Reuben J. Ross, Jr. [and others], with a section on Echinoderm biostratigraphy by James Sprinkle and Thomas E. Guensburg; B. An Ibexian (Lower Ordovician) reference section in the southern Egan Range, Nevada, for a conodont-based chronostratigraphy / by Walter C. Sweet and Celeste M. Tolbert; C. Upper Ordovician-Silurian macrofossil biostratigraphy of the eastern Great Basin, Utah and Nevada / by Peter M. Sheehan and Mark T. Harris. Michael E. Taylor, scientific editor. Includes bibliographical references. n-usp-- Geology, Stratigraphic Paleozoic Geology Great Basin Paleontology Paleozoic Fossils Great Basin Fossils Geology Geology, Stratigraphic Paleontology Paleozoic Geologic Period United States Great Basin From 230 to 570 million years ago fast I 19.16:1579 I 19.16:1579 Ibexian (Lower Ordovician) reference section in the southern Egan Range, Nevada, for a conodont-based chronostratigraphy Sweet, Walter C. Upper Ordovician-Silurian macrofossil biostratigraphy of the eastern Great Basin, Utah and Nevada Sheehan, Peter M. Ibexian, lowermost series in the North American Ordovician Early Paleozoic biochronology of the Great Basin, western United States. A-C (DLC) 97027034 (OCoLC)37595130 U.S. Geological Survey professional paper ; 1579 https://purl.fdlp.gov/GPO/gpo92380 COP 141123 20181023093727.0 in00004028910 eng