Schiller, J. in Rabenhorst, L. (ed.) (1937), Dinoflagellatae. Kryptogamen-Flora von Deutschland, Osterreich und der Schweiz Bd 10 Abt 3: 454, fig. 503 [tax. nov.]

Throndsen, J., Hasle, G.R. & Tangen, K. (2003), Norsk Kystplankton Flora: - [secondary reference]

ABRS (2008), Australian Algal Name Index Edn. 2008: - [secondary reference]

• Comment: This is one of a group of taxa which are morphotypes of O. sceptrum.

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