Kofoid, C.A. & Swezy, O. (1921), Mem. Univ. Calif 5: 258, pl. 4, fig. 42; fig. AA9 [comb. nov.]

basionym: Gymnodinium gracile var. sphaericum G.N.Calk. legitimate

Dakin, W.J. & Colefax, A.N. (1933), The marine plankton of the coastal waters of New South Wales. I. The chief planktonic forms and their seasonal distribution. Proc. Linn. Soc. New South Wales 58: 186–222 [secondary reference]

Wood, E.J.F. (1963), Dinoflagellates in the Australian region. II – Recent collections. Tech. Pap. Div. Fish. Oceanogr. CSIRO 14: 1–55 [secondary reference]

McCarthy, P. (Comp.) (2012), Census of Australian Marine Dinoflagellates: - [secondary reference]

orthographic variant: Gymnodinium gracile var. sphaerica G.N.Calk. orth. var. nomenclatural synonym: Gymnodinium gracile var. sphaericum G.N.Calk. legitimate

• APC Comment: P.McCarthy (2012) uses this taxon concept.
• Distribution: Coral Sea, N.S.W.
• Ex.distribution: U.S.A. (California ('cf.'), Massachusetts), Black Sea

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