Water Reptiles of the Past and Present

THE UNIVERSITY OF CHICAGO PRESS CHICAGO, ILLINOIS
Agents
THE CAMBRIDGE UNIVERSITY PRESS LONDON AND EDINBURGH
THE MARUZEN-KABUSHIKI-KAISHA TOKYO, OSAKA, KYOTO
KARL W. HIERSEMANN LEIPZIG
THE BAKER & TAYLOR COMPANY NEW YORK
Samuel Wendell Williston
Professor of Paleontology in the University of Chicago
THE UNIVERSITY OF CHICAGO PRESS CHICAGO, ILLINOIS
Copyright 1914 by The University of Chicago
All Rights Reserved Published October 1914
Composed and Printed By The University of Chicago Press Chicago, Illinois, U.S.A.