Plate 47. SALT MOUNTAIN CHILOGUEMBELINA, GLOBIGERINA, AND 



GLOBOROTALIA 



(Figure 1 X 220; all others X 145) 



Figure 1. Chiloguembelina species 180 



1, Side view of specimen (USNM PS832), 

 showing aperture directed toward broad side of 

 test. 

 Figures 2a-c. Globigerina triloculinoides Plummer 183 

 2a, Spiral view of 4 chambered hypotype 

 (USNM PS698), showing coarsely punctate sur- 

 face. 2b, Umbilical view, with small lip cover- 

 ing the nearly umbilical aperture. 2c, Edge 

 view. 

 Figures 3a-c. Globigerina spiralis Bolli 182 



3a, Spiral view of hypotype (USNM P5122). 

 3b, Umbilical view, showing umbilical aperture 

 and spinose character of wall in apertural region. 

 3c, Edge view, showing elevated spire. 

 Figure 4a-c. Globorotalia pseudomenardii Bolli 193 



4a, Spiral view of hypotype (USNM PS 702), 

 showing rapid increase in chamber height and 

 curved and slightly limbate sutures. 4b, Um- 

 284 



Page 

 bilical view, showing more nearly radial sutures. 

 4c, Edge view, showing keeled periphery. 

 Figures Sa-c. Globorotalia acuta Toulmin 185 



5a, Spiral view of hypotype (USNM P5142), 

 showing low chambers, curved sutures and 

 keeled periphery. 5b, Umbilical view, showing 

 ornate umbilical shoulder. 5c, Edge view, show- 

 ing nearly flat spiral side and open aperture, with 

 slight lip. 

 Figures 6a-c. Globorotalia perclara Loeblich and 191 

 Tappan, new species 



6a, Spiral view of paratype (USNM P5828). 

 6b, Umbilical view, showing small apertural lip. 

 6c, Edge view, showing low aperture. 

 Figures 7a— c. Globigerina mckannai White 181 



7a, Spiral view of hypotype (USNM P5833), 

 showing abnormal gap in the final pair of cham- 

 bers in the last whorl. 7b, Umbilical view, show- 

 ing completely umbilical aperture. 7c, Edge 

 view. 



