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Silicisphaera torulosa
Silicisphaera? torulosa Davey and Verdier, 1976
Now Florentinia?. Originally Silicisphaera?, subsequently (and now) Florentinia?. Davey and Verdier, 1976 questionably included this species in Silicisphaera.
Holotype: Davey and Verdier, 1976, pl.4, figs.10-11
Locus typicus: Loffre Borehole, Nord, France
Stratum typicum: Turonian
Original diagnosis: Davey and Verdier, 1976, p.328
The cyst wall is thick, densely microgranular and bears one process per reflected plate area. The processes vary considerably in width but are approximately of the same height. The apical, cingular, sulcal and antapical processes are relatively narrow whereas the preand postcingular processes are broad proximally and taper increasingly distally to terminate with a rounded outline. The processes are thin-walled and lightly granular. The archaeopyle appears to be precingular (3") but is not obvious.
Dimensions:Holotype Range
Central body diameter57 x 58 µm43-64 µm
Length of processes up to 18 µm17-21 µm
Now Florentinia?. Originally Silicisphaera?, subsequently (and now) Florentinia?. Davey and Verdier, 1976 questionably included this species in Silicisphaera.
Holotype: Davey and Verdier, 1976, pl.4, figs.10-11
Locus typicus: Loffre Borehole, Nord, France
Stratum typicum: Turonian
Original diagnosis: Davey and Verdier, 1976, p.328
The cyst wall is thick, densely microgranular and bears one process per reflected plate area. The processes vary considerably in width but are approximately of the same height. The apical, cingular, sulcal and antapical processes are relatively narrow whereas the preand postcingular processes are broad proximally and taper increasingly distally to terminate with a rounded outline. The processes are thin-walled and lightly granular. The archaeopyle appears to be precingular (3") but is not obvious.
Dimensions:Holotype Range
Central body diameter57 x 58 µm43-64 µm
Length of processes up to 18 µm17-21 µm