Excerpt from Age of the Springville Shale (Mississippian) Of Southern Illinois In 1956 Workman and Gillette (fig. 18, p. 36) referred the Springville to the Osage Group (valmeyer Series), and showed it overlying the Chouteau, there by indirectly correlating the limestone with the Chouteau and removing it from the Springville. Thus, prior to the present study, the limestone near the base of the Spring ville Shale had been accepted as Chouteau; the shale overlying the limestone had been called Osage, although no supporting evidence had been given; and the age of the gray shale beneath the limestone remained uncertain, although by implication it had been referred to the New Albany by Workman and Gillette. Some doubt remained concerning the correlation of the limestone, however, which correlation was the major reason for considering the Springville Shale to be of Valmeyer rather than Kinderhook age. With the above facts in mind we restudied all principal outcrops of the Springville Shale in Union and Alexander counties (fig. 1) along with their fossil faunas and are proposing several changes in classification as shown in figure 2. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.