Abstract

Two new dinoflagellate cyst morphotypes of gonyaulacacean affinity are described from Upper Oligocene and Lower Miocene sediments of the Norwegian Sea and assigned to new, monotypic genera: Lophocysta n.gen., distinguished by possessing a prominent ventral periphragm expansion enclosing a sulcal pericoel; and Evittosphaerula n.gen., whose sole resitant wall structure is a parasutural network.

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