Figure 81
Cyrtida, with a complicatedly structured cephalis.
I) Species, described as Diplostrobus facer Kozlova, 1966, Campanian, Eastern Urals (at smaller magnification than the other ones); II) Bisphaerocephalina armata Petrush., plankton, Pacific Ocean, “Vityaz”, station 5117, 50 m; III, IV) Amphimelissa (=Bisphaerocephalus) minuta (Popofsky, 1908): III) surface layer of the bottom sediment, Norwegian Sea, “Sevastopol”, station 1056; IV) plankton, Antarctic, “Obj” station 217, 300 m; V) Acrobotrys sp. V. Petrushevskaya, 1965b, plankton, Pacific Ocean, “Vityaz” station 5117, 50 m; VI) A. disolenia =(?) Phormobotrys cannothalamia Hck., Upper Oligocene, JYN V 16P (II-IV at larger magnification than I).
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