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Toenisbergia imaginata
Toenisbergia imaginata (Benedek, 1972, p.45–46, pl.6, figs.12a–b; pl.6, fig.9) Benedek et al., 1982, p.279,281–283. Emendation: Benedek et al., 1982, p.279,281, as Toenisbergia imaginata.
Now Pentadinium taeniagerum ssp. imaginatum. Originally (and now) Pentadinium taeniagerum ssp. imaginatum, subsequently Toenisbergia imaginata.
Benedek et al., 1982 considered Pentadinium laticinctum ssp. imaginatum and Pentadinium taeniagerum ssp. imaginatum to be taxonomic synonyms; however, Lentin and Williams, 1985 retained them as separate subspecies of Pentadinium laticinctum Gerlach 1961 and Pentadinium taeniagerum Gerlach, 1961, respectively. Sarjeant in Lentin and Wiliiams, 1989 pointed out that all three authors (Benedek, Gocht and Sarjeant) of the genus Toenisbergia agree that there is a space between the archeopyle and the cingulum. At the time of the transfer and elevation of rank, Benedek et al., 1982 raised this taxon to species rank.
Holotype: Benedek, 1972, pl.6, figs.12a-b (as Pentadinium taeniagerum ssp. imaginatum); Benedek et al., 1982, figs.7A,C,E,8C-D
Paratype: Benedek et al., 1982, figs.6A,C,E,8A-B (holotype of Pentadinium laticinctum ssp. imaginatum Benedek, 1972)
Age: Late Oligocene
Emended diagnosis: Benedek et al., 1982, p. 21-22
Cyst circumcavate. Periblast rounded-hexagonal in polar view (with a marked sulcal indentation), irregularly subpolygonal in ambitus, with outbulges at the apex and equator and with antapex rather flat. Endoblast ovoidal to rounded-subpolygonal, thick and two-layered (mesophragm + endophragm). Horns absent; crests and processes lacking. Cingulum not clearly defined, but faintly suggested by equatorial folding: sulcus not readily visible in lateral vice, but clearly indicated in polar view by the ventral inbulge of the periblast. Archacopyle intercalary (type I/I); very large in the periblast, with archaeopyle index greater than 0.5, somewhat smaller proportionately in the endoblast. Surface of periphragm lightly granular; endoblast apparently punctate, surface of mesophragm granular.
Now Pentadinium taeniagerum ssp. imaginatum. Originally (and now) Pentadinium taeniagerum ssp. imaginatum, subsequently Toenisbergia imaginata.
Benedek et al., 1982 considered Pentadinium laticinctum ssp. imaginatum and Pentadinium taeniagerum ssp. imaginatum to be taxonomic synonyms; however, Lentin and Williams, 1985 retained them as separate subspecies of Pentadinium laticinctum Gerlach 1961 and Pentadinium taeniagerum Gerlach, 1961, respectively. Sarjeant in Lentin and Wiliiams, 1989 pointed out that all three authors (Benedek, Gocht and Sarjeant) of the genus Toenisbergia agree that there is a space between the archeopyle and the cingulum. At the time of the transfer and elevation of rank, Benedek et al., 1982 raised this taxon to species rank.
Holotype: Benedek, 1972, pl.6, figs.12a-b (as Pentadinium taeniagerum ssp. imaginatum); Benedek et al., 1982, figs.7A,C,E,8C-D
Paratype: Benedek et al., 1982, figs.6A,C,E,8A-B (holotype of Pentadinium laticinctum ssp. imaginatum Benedek, 1972)
Age: Late Oligocene
Emended diagnosis: Benedek et al., 1982, p. 21-22
Cyst circumcavate. Periblast rounded-hexagonal in polar view (with a marked sulcal indentation), irregularly subpolygonal in ambitus, with outbulges at the apex and equator and with antapex rather flat. Endoblast ovoidal to rounded-subpolygonal, thick and two-layered (mesophragm + endophragm). Horns absent; crests and processes lacking. Cingulum not clearly defined, but faintly suggested by equatorial folding: sulcus not readily visible in lateral vice, but clearly indicated in polar view by the ventral inbulge of the periblast. Archacopyle intercalary (type I/I); very large in the periblast, with archaeopyle index greater than 0.5, somewhat smaller proportionately in the endoblast. Surface of periphragm lightly granular; endoblast apparently punctate, surface of mesophragm granular.