Jørgensen, E. (1920), Mediterranean Ceratia. Report of the Danish Oceanographic Expedition to the Mediterranean 1908-1910 to the Mediterranean and Adjacent Seas II (Biol.) J. 1: 86 [comb. nov.]

• Comment: Jorgensen (1920: 86) uses the lower case Greek a = typical, in this case variety.

Jørgensen, E. (1920), Mediterranean Ceratia. Report of the Danish Oceanographic Expedition to the Mediterranean 1908-1910 to the Mediterranean and Adjacent Seas II (Biol.) J. 1: - [taxonomic synonym]

taxonomic synonym of: Ceratium carriense var. massiliense (Gourret) Huisman legitimate

Schiller, J. in Rabenhorst, L. (ed.) (1937), Dinoflagellatae. Kryptogamen-Flora von Deutschland, Osterreich und der Schweiz Bd 10 Abt 3: 424 [secondary reference]

Huisman, J.M. (1989), The genus Ceratium (Dinophyceae) in Bass Strait and adjoining waters, southern Australia. Australian Systematic Botany 2: - [secondary reference]

Gómez, F. (2013), Reinstatement of the dinoflagellate genus Tripos to replace Neoceratium, marine species of Ceratium (Dinophyceae, Alveolata). CICIMAR Oceanides 28(1): 13 [taxonomic synonym]

taxonomic synonym of: Tripos massiliensis var. macroceroides F.Gómez nom. inval.

Gómez, F. (2021), Speciation and infrageneric classification in the planktonic dinoflagellate Tripos (Gonyaulacales, Dinophyceae). Current Chinese Science 1(3): 357, fig 9t [secondary reference]

taxonomic synonym: Tripos macroceros (Ehrenb.) Hallegr. & Huisman legitimate

• Comment: Gomez (2021:357) refers to his fig. 9t which is Ceratium tripos macroceroides G. Karsten the basionym of Ceratium massiliense f. macroceroides (G.Karst.) Jørg.. In the discussion (p. 357) he uses fig 9t as Ceratium protuberans and states that it is a taxonomic synonym of Tripos macroceros.

---