Back
Palaeoperidinium hyalodermum
Palaeoperidinium "hyalodermum" Deflandre, 1939b, p.144, pl.6, figs.3–4.
Holotype: Deflandre, 1939b, pl.6, figs.3–4; Jan du Chêne et al., 1986a, pl.58, figs.1–5.
Name not validly published: generic name not validly published until 1967.
NOW Impagidinium?. Originally Palaeoperidinium (name not validly published), subsequently Gonyaulacysta, thirdly Gonyaulacysta?, fourthly Rhynchodiniopsis?, fifthly (and now) Impagidinium?.
Age: Kimmeridgian.
Holotype: Deflandre, 1939b, pl.6, figs.3–4; Jan du Chêne et al., 1986a, pl.58, figs.1–5.
Name not validly published: generic name not validly published until 1967.
NOW Impagidinium?. Originally Palaeoperidinium (name not validly published), subsequently Gonyaulacysta, thirdly Gonyaulacysta?, fourthly Rhynchodiniopsis?, fifthly (and now) Impagidinium?.
Age: Kimmeridgian.