NORTH AMERICAN 

 INDEX FOSSILS 



INVERTEBRATES 



BY 



AMADEUS W. GRABAU, S.M., S.D. 



PROFESSOR OF PALAEONTOLOGY IN COLUMBIA UNIVERSITY 



AND 



HERVEY WOODBURN SHIMER, A.M., Ph.D. 



ASSISTANT PROFESSOR OF PALEONTOLOGY IN THE MASSACHUSETTS INSTITUTE OF TECHNOLOGY 



Volume I 



PROTOZOA, PORIFERA, HYDROZOA, ANTHOZOA, BRYOZOA, BRACHIOPODA, 

 PEEECYPODA, SCAPHOPODA AND GASTROPODA 



NEW YORK 



A. G. SEILER ■& COMPANY 



1909 



