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Gonyaulacysta nannotrix
Gonyaulacysta nannotrix (Deflandre, 1939) Sarjeant, 1969
Now Leptodinium. Originally Gonyaulax, subsequently Gonyaulacysta, thirdly Rhynchodiniopsis?, fourthly (and now) Leptodinium.
Stover and Evitt, 1978, considered this to be a problematical species of Gonyaulacysta.
Jan du Chêne et al., 1986, recommended that the name of this species, which is based on a single specimen, be restricted to the holotype.
This combination was not validly published in Sarjeant, 1966, since that author did not fully reference the basionym.
Holotype: Deflandre, 1939, pl.6, fig.7; Jan du Chêne et al., 1986, pl.69, figs.4-6
Age: Kimmeridgian
Now Leptodinium. Originally Gonyaulax, subsequently Gonyaulacysta, thirdly Rhynchodiniopsis?, fourthly (and now) Leptodinium.
Stover and Evitt, 1978, considered this to be a problematical species of Gonyaulacysta.
Jan du Chêne et al., 1986, recommended that the name of this species, which is based on a single specimen, be restricted to the holotype.
This combination was not validly published in Sarjeant, 1966, since that author did not fully reference the basionym.
Holotype: Deflandre, 1939, pl.6, fig.7; Jan du Chêne et al., 1986, pl.69, figs.4-6
Age: Kimmeridgian