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Gonyaulacysta tenuitabulata
Gonyaulacysta tenuitabulata (Gerlach 1961) De Coninck 1969
Now Cribroperidinium. Originally Gonyaulax, subsequently Gonyaulacysta, thirdly Millioudodinium, fourthly (and now) Cribroperidinium, fifthly Rhynchodiniopsis.
Sarjeant, 1984, transferred this species to Rhynchodiniopsis Deflandre 1935. Lentin and Williams, 1985, retained it in Cribroperidinium Neale and Sarjeant 1962.
Holotype: Gerlach, 1961, pl.25, figs.10-11
Locus typicus: Emsb³ren boring no. 7, NW Germany
Stratum typicum: Middle Oligocene-Middle Miocene
Translation Gerlach, 1961: Sarjeant, 1984
Original diagnosis: Gerlach, 1961, p. 160: Gonyaulax tenuitabulatum
Shell thin-walled, broadly spheroidal, with short, blunt apical horn. Tabulation pattern: 4", 6", 6""", 1p, 1pv, 1"""". Plates enclosed by low, narrow crests. Girdle furrow spiral, with an offset of about 1 1/2 furrow widths. Membrane finely granulate.
Now Cribroperidinium. Originally Gonyaulax, subsequently Gonyaulacysta, thirdly Millioudodinium, fourthly (and now) Cribroperidinium, fifthly Rhynchodiniopsis.
Sarjeant, 1984, transferred this species to Rhynchodiniopsis Deflandre 1935. Lentin and Williams, 1985, retained it in Cribroperidinium Neale and Sarjeant 1962.
Holotype: Gerlach, 1961, pl.25, figs.10-11
Locus typicus: Emsb³ren boring no. 7, NW Germany
Stratum typicum: Middle Oligocene-Middle Miocene
Translation Gerlach, 1961: Sarjeant, 1984
Original diagnosis: Gerlach, 1961, p. 160: Gonyaulax tenuitabulatum
Shell thin-walled, broadly spheroidal, with short, blunt apical horn. Tabulation pattern: 4", 6", 6""", 1p, 1pv, 1"""". Plates enclosed by low, narrow crests. Girdle furrow spiral, with an offset of about 1 1/2 furrow widths. Membrane finely granulate.