Back
Gonyaulax sarjeantii var. sphaericum
Gonyaulax sarjeantii ssp. sphaericum Vozzhennikova, 1967
Now Cribroperidinium sarjeantii ssp. sphaericum. Originally Gonyaulax sarjeantii var. sphaerica, subsequently Gonyaulacysta sarjeantii ssp. sphaerica, thirdly Millioudodinium sarjeantii ssp. sphaericum, fourthly Rhynchodiniopsis sarjeantii ssp. sphaerica, fifthly Cribroperidinium? sarjeantii ssp. sphaericum, sixthly (and now) Cribroperidinium sarjeantii ssp. sphaericum.
Holotype: Vozzhennikova, 1967, pl.28, fig.4; Jan du Chêne et al., 1986, pl.20, fig.9 (lost, according to Lentin and Vozzhennikova, 1990)
Lectotype: Lentin and Vozzhennikova, 1990, pl.16, figs.1-2 (designated by Lentin and Vozzhennikova, 1990)
Locus typicus: Moscow region, Russia
Stratum typicum: Tithonian
Translation Vozzhennikova, 1967; Lentin and Vozzhennikova, 1990
Original description: Vozzhennikova, 1967, p.89
Theca oval broadly pyriform, with a flexible apical horn which is straight or curvet relation to the theca. Edge of transverse furrow and margins of apical plates surrountet by a colum type of sculpturing or by slender processes of different heights bifurcate at the ents. The bifurcations at the ends of the processes may join together and subsequently branch to give a finely reticulate structure wich occurs more particularly at the antapical ends where the border is wider.
Now Cribroperidinium sarjeantii ssp. sphaericum. Originally Gonyaulax sarjeantii var. sphaerica, subsequently Gonyaulacysta sarjeantii ssp. sphaerica, thirdly Millioudodinium sarjeantii ssp. sphaericum, fourthly Rhynchodiniopsis sarjeantii ssp. sphaerica, fifthly Cribroperidinium? sarjeantii ssp. sphaericum, sixthly (and now) Cribroperidinium sarjeantii ssp. sphaericum.
Holotype: Vozzhennikova, 1967, pl.28, fig.4; Jan du Chêne et al., 1986, pl.20, fig.9 (lost, according to Lentin and Vozzhennikova, 1990)
Lectotype: Lentin and Vozzhennikova, 1990, pl.16, figs.1-2 (designated by Lentin and Vozzhennikova, 1990)
Locus typicus: Moscow region, Russia
Stratum typicum: Tithonian
Translation Vozzhennikova, 1967; Lentin and Vozzhennikova, 1990
Original description: Vozzhennikova, 1967, p.89
Theca oval broadly pyriform, with a flexible apical horn which is straight or curvet relation to the theca. Edge of transverse furrow and margins of apical plates surrountet by a colum type of sculpturing or by slender processes of different heights bifurcate at the ents. The bifurcations at the ends of the processes may join together and subsequently branch to give a finely reticulate structure wich occurs more particularly at the antapical ends where the border is wider.