Back
Millioudodinium tenuitabulatum
Millioudinium tenuitabulatum (Gerlach, 1961) Stover and Evitt, 1978; Emendation: Sarjeant, 1984b, p.76, as Rhynchodiniopsis tenuitabulata.
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 Millioudodinium.
At the time of the transfer to Rhynchodiniopsis, Sarjeant, 1984, also emended the diagnosis.
Holotype: Gerlach, 1961, pl.25, figs.10-11 (lost according to Sarjeant, 1984)
Lectotype: Sarjeant, 1984, pl.2, fig.2 (designated by Sarjeant, 1984)
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 Millioudodinium.
At the time of the transfer to Rhynchodiniopsis, Sarjeant, 1984, also emended the diagnosis.
Holotype: Gerlach, 1961, pl.25, figs.10-11 (lost according to Sarjeant, 1984)
Lectotype: Sarjeant, 1984, pl.2, fig.2 (designated by Sarjeant, 1984)
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.