Kofoid, 1931
From dinoflaj3
Kofoid, C.A., 1931: Report of the biological survey of Mutsu Bay. 18. Protozoan fauna of Mutsu Bay. Subclass Dinoflagellata; tribe Gymnodinioidae. Tôhoku Imperial University, Science Reports, Series 4, 6(1), p.1-43, pl. 1-3.