Schröder, B. (1900), Phytoplankton des Golfes von Neapel. Mittheilungen aus der Zoologischen Station zu Neapel 14: p.15 Taf 1 fig 17 b-e [primary reference]

Ostenfeld, C.E.H. & Schmidt, J. (1901), Plankton fra det Rode Hav og Adenbugten [Plankton of the Red Sea and the Gulf of Aden]. Videnskabelige Meddelelser fra Dansk Naturhistorisk Forening i Kjobenhavn 25: 164 [secondary reference]

• Comment: Ostenfeld & Schmidt specifically align their taxon with Schroeder 1900 and not with Gourett 1883.

Pavillard, J. (1905), Recherches sur la flore pelagique (phytoplankton) de l'Etang de Thau. Travaux de l'Institut de Botanique de l'Universite de Montpellier et de la Station Zoologique de Cette 2: 51 [replaced synonym]

replaced synonym of: Ceratium gracile Pavill. legitimate

Wood, E.J.F. (1954), Dinoflagellates of the Australian region. Australian Journal of Marine and Freshwater Research 5: - [secondary reference]

pro parte taxonomic synonym: Ceratium pulchellum Schröd. legitimate

Algal Subcommittee (2019), CHAH Algal Subcommittee: - [orthographic variant]

orthographic variant of: Ceratium tripos var. gracile Gourret nom. illeg.

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