Bassler, Ray S., et al. / Shelled invertebrates of the past and present, with chapters on geological history
[Foreword] Editor's foreword
EDITOR'S FOREWORD The chapters on Geological History, which begin this volume, cover a wide field. The editors feel that such a survey of the earth's history as that prepared by Doctors Bassler and Resser constitutes a valuable background to all the volumes of the present series which deal with biology; and in view of the extent to which our knowledge of historical geology, especially of the Paleozoic Era, depends upon fossil shells, this volume seemed to be the most appropriate place for the survey. The two authors have combined their chapters to make a continuous story, with the result that Doctor Resser's section-Chapters III, IV, and V-appears in the middle of Doctor Bassler's section, he being responsible for Chapters I, II, VI, and VII.
Copyright 1931 by Smithsonian Institution Series, Inc.| For information on re-use, see: http://digital.library.wisc.edu/1711.dl/Copyright