Plate 4 



Fig. 1. Guttulina frankei Cushman and Ozawa. X 45. Middle Oligocene, 

 Sollingen, Germany, a, b, side views; c, basal view. 

 2. Guttulina trigonula (Reuss) . X 80. Cretaceous, Lower Gault, Cam- 

 bridge Brickyard, Cambridge, England, a, b, side views; c, basal 

 view. . 

 3-5. Guttulina austriaca d'Orbigny. X 45. Miocene, brickyard of Baden, 

 near Vienna, Austria. 3, 4, early stages. 5, adult, a, b, side 

 views; c, basal view, 

 o, 7. Guttulina yabei Cushman and Ozawa. X 35. Pliocene, Sawane, 

 Island of Sado, Japan. 6 a, b, side views of young specimen. 7, 

 adult, a, side view; 6, basal view. 



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