Cell subspherical one side often flattened; oral cavity acentric, funnel-shaped; one macronucleus, C-shaped, anterior; 1 micronucleus; 5 somatic kineties, K5 describes partial circle, originates and ends towards the anterior; K1 and K2 form the flat side on the posterior part of the cell
- Alekperov K, Mamayeva N (1993) Planktonic ciliates from the Chukchi and Bering Seas. Zool Zh 71:5-14
- Leegaard C (1915) Untersuchungen über einige Planktonciliaten des Meeres. Nyt Mag Naturvid. 53:1-37
- Lynn DH, Montagnes DJS (1988) Taxonomic desciptions of some conspicuous species of strobilidiine ciliates (Ciliophora: Choreotrichida) from the Isles of Shoals, Gulf of Maine. J mar biol Ass UK 68: 639-658
- Kuylenstierna M & Karlson B 1996-2000 (www.marbot.gu.se/SSS/others/Strobilidium_spiralis.htm)
