Abé, T.H. (1927), Report of the biological survey of Mutsu Bay. 3. Notes on protozoanfauna of Mutsu Bay. I Peridiniales. Science Reports of the Tohoku Imperial University 2: 397-399 [tax. nov.]

• Type locality: Off Futagojima

Balech, E. (1964), Tercera contribucion al conocimiento del genero "Peridinium". Revista del Museo Argentino de Ciencias Naturales Bernardino Rivadavia e instituto nacional de investigacion de las ciencias naturales. Hidrobiologya 1 (6): 187 [secondary reference]

• Comment: P. sphaeroidea is a later homonym of P. sphaeroidea Dangeard.

Balech, E. (1964), Tercera contribucion al conocimiento del genero "Peridinium". Revista del Museo Argentino de Ciencias Naturales Bernardino Rivadavia e instituto nacional de investigacion de las ciencias naturales. Hidrobiologya 1 (6): 187 [nomenclatural synonym]

nomenclatural synonym of: Peridinium inclinatum Balech legitimate

Taylor, F.J.R. (1976), Dinoflagellates from the international Indian Ocean Expedition. A report on material collected by the R. V. 'Anton Bruun' 1963-1964. Bibliotheca Botanica 132: 164 [secondary reference]

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

• Comment: Bohm 1936 Bishop Museum Bull No 137 p 37 indicates spelling is spharoidea Abe. This species is most common species in W Pacific and is a good species

ABRS (2008), Australian Algal Name Index Edn. 2008: - [taxonomic synonym]

taxonomic synonym of: Peridinium inclinatum Balech legitimate

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