TERTIARY INVERTEBRATES. 
BY 
A. E. ORTMANN, Ph.D. 
CONTENTS. 
Introduction ........... 
Systematic Part ........... 
Echinodermata .......... 
Vermes ............ 
Bryozoa ............ 
Brachiopoda ........... 
Mollusca ........... 
Pelecypoda ........... 
Scaphopoda ........... 
Gastropoda ........... 
Crustacea ........... 
Cirripedia ........... 
Decapoda ........... 
General Considerations ......... 
The Patagonian beds ......... 
History of our knowledge of the Patagonian fauna 
The identity of Patagonian and Suprapatagonian beds . 
1 . The type-locality at Santa Cruz ...... 
2. Comparison of other localities with type-fauna at Santa Cruz . 
The age of the Patagonian beds ....... 
1. Comparison of the Patagonian fauna with faunas of the 
northern hemisphere ....... 
2. Comparison of the Patagonian beds with Tertiary deposits 
of the southern hemisphere ...... 
The Magellanian beds ......... 
The Cape Fairweather beds (? Marine Tehuelche beds) 
Origin and development of the Patagonian marine faunas 
1. Theory of “Antarctica ” ........ 
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 ” ....... 
Bibliography 
47 
PAGE. 
48- 50 
5I- 2 59 
51- 63 
63- 64 
64- 70 
70- 80 
80-247 
80-157 
I 57 -l 6 l 
161-247 
247-256 
247-255 
255-256 
260-324 
260-303 
260-265 
265-286 
265-271 
272-286 
286-303 
286-297 
297-303 
303-307 
307-310 
3IO-324 
3 10-3 i 9 
319-324 
325-332 
