Shell composed of a D-shaped sagittal ring, a basal ring and a frontal ring (see main spines/skeleton 3). Breadth of frontal ring: ca. 140-180 µm.
Ref.: Petrushevskaya (1971a); Nigrini and Moore (1979).
Kingdom Protoctista Phylum Actinopoda Subphylum Sarcodina Class Polycystina Order Nassellaria Family Spyridae Genus Acanthodesmia Species Acanthodesmia viniculata
