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Pervosphaeridium granulosum
Pervosphaeridium granulosum (Jain and Millepied, 1975, p.151–152, pl.5, figs.69–70) Masure in Fauconnier and Masure, 2004, p.164.
Originally Polysphaeridium, subsequently Dapsilidinium, thirdly (and now) Pervosphaeridium?. Questionable assignment: Masure in Fauconnier and Masure (2004, p.164).
Holotype: Jain and Millepied, 1975, pl.5, fig.69.
Age: Campanian–Maastrichtian.
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Original description: [Jain & Millepied, 1975]:
Polysphaeridium granulosum sp. nov.
Holotype - PI. 5, Fig. 69; Slide No. 7762-1.
Type localily - Bore hole no. CM-1, depth 861 metres ; Senegal Basin, W. Africa.
Horizon - Campanian-Maestrichtian.
Diagnosis - Cyst spherical, chorate, double layered, both endophragm and periphragm granulate; processes fibrous, short, variable in size and shape, tubiform to flared, expanded distally, narrow in middle, margin sligiatly recurved, hollow, nearly 60 in number. Tabulation not clearly confirmed. Archacopyle apical, margin angular.
Measurements
Cyst size: holotype: 90 μm, range: 90-100 μm
Body diameter: holotype: 70 μm, range: 70-75 μm
Wall thickness: holotype: 1.5 μm, range: 1.5-2.6 μm
Size of process: holotype: 6.5-14 x 2-6 μm, range: 6.5-20 x 2-6 μm
Comparison - Polysphaeridium granulosum sp. nov. is characterised by its granulate walls with tubiform to flared processes having apical archaeopyle. These features distinguish it from other known species of the genus.
Originally Polysphaeridium, subsequently Dapsilidinium, thirdly (and now) Pervosphaeridium?. Questionable assignment: Masure in Fauconnier and Masure (2004, p.164).
Holotype: Jain and Millepied, 1975, pl.5, fig.69.
Age: Campanian–Maastrichtian.
-------------------------------------------------------------------------------------------------------------
Original description: [Jain & Millepied, 1975]:
Polysphaeridium granulosum sp. nov.
Holotype - PI. 5, Fig. 69; Slide No. 7762-1.
Type localily - Bore hole no. CM-1, depth 861 metres ; Senegal Basin, W. Africa.
Horizon - Campanian-Maestrichtian.
Diagnosis - Cyst spherical, chorate, double layered, both endophragm and periphragm granulate; processes fibrous, short, variable in size and shape, tubiform to flared, expanded distally, narrow in middle, margin sligiatly recurved, hollow, nearly 60 in number. Tabulation not clearly confirmed. Archacopyle apical, margin angular.
Measurements
Cyst size: holotype: 90 μm, range: 90-100 μm
Body diameter: holotype: 70 μm, range: 70-75 μm
Wall thickness: holotype: 1.5 μm, range: 1.5-2.6 μm
Size of process: holotype: 6.5-14 x 2-6 μm, range: 6.5-20 x 2-6 μm
Comparison - Polysphaeridium granulosum sp. nov. is characterised by its granulate walls with tubiform to flared processes having apical archaeopyle. These features distinguish it from other known species of the genus.