Excerpt from Frasnian (Upper Devonian) Rugose Corals From the Lime Creek and Shell Rock Formations of Iowa Calvin Levorson, then postmaster of Riceville, Iowa, accompanied me in the field in the late 1960's and early 1970's, and shared with me his encyclopedic knowledge of outcrops and collecting localities, in cluding those of Charles Belauski. Donald L. Koch, then geologist (now Director) of the Iowa Geological Survey, shared his knowledge of the Shell Rock For mation, and Harrell Strimple (deceased) of the Uni versity of Iowa aided me in borrowing collections and providing me with locality information regarding the Frasnian faunas of north-central Iowa. Professors Wil liam Furnish, Brian Glenister and Gilbert Klapper of the University of Iowa all gave freely of their Wisdom and good will. Ms. Julia Golden of the University of Iowa has kindly arranged for loans of specimens from the Belauski Collection. Professor Donald B. Macurda, Jr., then of the University of Michigan, arranged for my borrowing specimens from the Fenton collections at the University of Michigan Museum of Paleontol ogy. Dr. Matthew H. Nitecki and Ms. Phyllis N. Win dle aided by arranging for loans of Fenton types from the Field Museum of Natural History. Dr. Bruce Bell made it possible for me to borrow Hall and Whitfield specimens from the New York State Museum of Nat ural History. Mr. Frederick J. Collier and Mrs. Jann Thompson have been similarly gracious in arranging for loans of Webster types and other specimens at the United States National Museum Of Natural History (smithsonian Institution). At Binghamton University, thin sections Of corals have been made with skill by Mr. Frank Sedlak and Mr. Richard Jacyna. Photogra phy has been by Mr. David Tuttle. Ms. Anne D. Hull has prepared all maps and charts for this publication. Dr. Carl W. Stock spent one field season with me in Iowa while he was working on stromatoporoid faunas Of the Upper Devonian of Iowa. Professional expertise and criticism of this manuscript have been provided by Dr. William A. Oliver, Jr. Of the United States Geo logical Survey, and by Dr. Ross A. Mclean of Amoco Canada Petroleum Co. Ltd. Biostratigraphy has been reviewed by Professor Gilbert Klapper of the Univer sity of Iowa. 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.