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Rhynchodiniopsis hyaloderma
Rhynchodiniopsis? hyaloderma (Deflandre, 1939) Sarjeant, 1982
Now Impagidinium?. Originally Palaeoperidinium, subsequently Gonyaulacysta, thirdly Rhynchodiniopsis?, fourthly (and now) Impagidinium?. Sarjeant, 1982 considered this to be a "provisionally accepted species" of Rhynchodiniopsis.
Holotype: Deflandre, 1939, pl.6, figs.3-4; Jan du Chêne et al., 1986, pl.58, figs.1-5
Age: Kimmeridgian
Now Impagidinium?. Originally Palaeoperidinium, subsequently Gonyaulacysta, thirdly Rhynchodiniopsis?, fourthly (and now) Impagidinium?. Sarjeant, 1982 considered this to be a "provisionally accepted species" of Rhynchodiniopsis.
Holotype: Deflandre, 1939, pl.6, figs.3-4; Jan du Chêne et al., 1986, pl.58, figs.1-5
Age: Kimmeridgian