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

taxonomic synonym: Ceratium fusus var. extensum Gourret legitimate

Hallegraeff, G. et al. (2020), The marine planktonic dinoflagellate Tripos: 60 years of species-level distributions in Australian waters. Australian Systematic Botany 33: 398 [secondary reference]

• Comment: This synonymy refers to the concept of authors later than Ceratium extensum sensu Kofoid 1908

Hallegraeff, G. et al. (2020), The marine planktonic dinoflagellate Tripos: 60 years of species-level distributions in Australian waters. Australian Systematic Botany 33: 398 [taxonomic synonym]

taxonomic synonym of: Tripos biceps (Clap. & J.Lachm.) F.Gómez legitimate

ABRS (2023), Australian Algal Name Index Edn. 2023 (Australian algal updates): - [taxonomic synonym]

taxonomic synonym of: Tripos extensus (Gourret) F.Gómez legitimate

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