TERTIARY INVERTEBRATES. 



BY 



A. E. ORTMANN, PH.D. 



CONTENTS. 



PAGE. 



Introduction ........... 48 50 



Systematic Part ........... 51259 



Echinodermata . . . . . . . . . . 51-63 



Vermes ............ 63- 64 



Bryozoa ............ 64- 70 



Brachiopoda ........... 70- 80 



Mollusca ........... 80-247 



Pelecypoda 80-157 



Scaphopoda . . ' . . . . . . . . . 157-161 



Gastropoda ........... 161-247 



Crustacea ........... 247-256 



Cirripedia 247-255 



Decapoda 255-256 



General Considerations ... . . . . . . . 260-324 



The Patagonian beds . . . . . . . . . 260-303 



History of our knowledge of the Patagonian fauna . . . 260-265 



The identity of Patagonian and Suprapatagonian beds . . . 265-286 



1. The type-locality at Santa Cruz ...... 265-271 



2. Comparison of other localities with type-fauna at Santa Cruz . 272-286 

 The age of the Patagonian beds ....... 286-303 



1. Comparison of the Patagonian fauna with faunas of the 



northern hemisphere . . . . . . . 286-297 



2. Comparison of the Patagonian beds with Tertiary deposits 



of the southern hemisphere ...... 2 97-33 



The Magellanian beds 303-307 



The Cape Fairweather beds (? Marine Tehuelche beds) . . . 307-310 



Origin and development of the Patagonian marine faunas . . 310324 



1. Theory of " Antarctica " 310-319 



2. Relations of the Patagonian deposits to other parts of South 



America, and to the rest of the world ; theory of " Archi- 



plata " and " Archhelenis " 3 J 9-3 2 4 



Bibliography 3 2 5~33 2 



47 



