EXPLANATION OF PLATE 33 

 All figures natural size. 

 Fig. 1. Mulinia densat a Conrad. Etchegoin, Pliocene. 

 Fig. 2. Mulinia densata Conrad. San Pablo, Miocene. 

 Fig. 3. Mulinia densata Conrad. Etchegoin, Pliocene. 

 Fig. 4. Mulinia densata Conrad. Etchegoin, Pliocene. 

 Fig. 5. Mulinia densata Conrad. Etchegoin, Pliocene. 



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