Conodonts from rocks of Marmor and Ashby age (Middle Ordovician) in Russell and Scott counties, Virginia

Wigley, Perry B.2024-04-112024-04-111968https://hdl.handle.net/10919/118559viii, 168 leavesapplication/pdfenIn CopyrightLD5655.V856 1968.W49ConodontsGeology -- Virginia -- Russell CountyGeology -- Virginia -- Scott CountyGeology, Stratigraphic -- OrdovicianConodonts from rocks of Marmor and Ashby age (Middle Ordovician) in Russell and Scott counties, VirginiaDissertation