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Petrushevskaya 1971


Figure 29

The structure of flat cephalises.
I) Enneaphormis (?) clathratus (Kozlova, 1966), Upper Cretaceous, California, 1114; II) Sethophormis aurelia Hck., plankton, Pacific Ocean, JYN 15; III, IV) Ceratocyrtis histricosa form a A., plankton: III) Gulf of Mexico, "Kovalevskij" station 125; IV) Pacific Ocean, RIS 52; V) Ceratocyrtis sinuosa (Popofsky), plankton, Pacific Ocean, "Vityaz" station 3511. Other designations same as in fig. 10.