Devonian-Mississippian boundary in southern Indiana-northwestern Kentucky : field trip 7, Ninth International Congress of Carboniferous Stratigraphy and Geology /

Published 1979

The paracontinuity and the determination of the Devonian--Mississippian boundary in the lower Mississippian type area of North America,

by Conkin, James Elvin, Conkin, James Elvin, Conkin, James Elvin, Conkin, Barbara M., Conkin, Barbara M., Conkin, Barbara M.
Published 1973

The Devonian-Mississippian and Kinderhookian-Osagean boundaries in the East-Central United States are paracontinuities /

by Conkin, James Elvin, Conkin, James Elvin, Conkin, James Elvin, Conkin, Barbara M., Conkin, Barbara M., Conkin, Barbara M.
Published 1975

Revision of the charophyte genus Moellerina Ulrich, 1886 and suppression of the genus Karpinskya (Croft, 1952) Grambast, 1962 /

Published 1974