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Thalassiphora maxima
From Fensome et al., 2019:
Thalassiphora? maxima Jain and Millepied, 1975, p.146, pl.4, figs.53–54.
Holotype: Jain and Millepied, 1975, pl.4, fig.54.
Originally Thalassiphora, subsequently (and now) Thalassiphora?, thirdly Disphaeria.
Lentin and Williams (1985, p.354) questionably retained the species in Thalassiphora. Questionable assignment: Stover and Evitt (1978, p.195).
Age: Campanian–Maastrichtian.
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Original description: [Jain and Millepied, 1975]:
Thalassiphora maxima sp. nov. (Pl. 4, Figs. 53-54)
Holotype - Pl. 4, Fig. 54; Slide No. 8456-2.
Type locality - Bore hole no. CM-1; depth 1055.05 metres; Senegal Basin, W. Africa.
Horizon - Campanian-Maestrichtian.
Diagonosis - Capsule spherical, thick walled with ovoidal pylome; boundary wall thick, surrounded by an equatorially placed wide membraneous wing, double walled with radially arranged broad folds, spongeous, with slight perforations. No tabulation discernible.
Measurements
Shell size: holotype: 80 x 128 μm, range: 70-80 x 110-145 μm
Central body diameter: holotype: 80 μm, range: 70-80 μm
Flange width: holotype: 31.5 μm, range: 30-45 μm
Comparison - Thalassiphora maxima sp. nov. differs from other known specics of the genus in having large spɔngoous membrane with perforations. Thalassiphora delicala Williams & Downie (1966) resembles in having perforate ornamentation of periphragm but differs in its delicate membraneous flange with no radial foldings. The present specimens are also much bigger in size.
Thalassiphora? maxima Jain and Millepied, 1975, p.146, pl.4, figs.53–54.
Holotype: Jain and Millepied, 1975, pl.4, fig.54.
Originally Thalassiphora, subsequently (and now) Thalassiphora?, thirdly Disphaeria.
Lentin and Williams (1985, p.354) questionably retained the species in Thalassiphora. Questionable assignment: Stover and Evitt (1978, p.195).
Age: Campanian–Maastrichtian.
---------------------------------------------------------------------------------------------------
Original description: [Jain and Millepied, 1975]:
Thalassiphora maxima sp. nov. (Pl. 4, Figs. 53-54)
Holotype - Pl. 4, Fig. 54; Slide No. 8456-2.
Type locality - Bore hole no. CM-1; depth 1055.05 metres; Senegal Basin, W. Africa.
Horizon - Campanian-Maestrichtian.
Diagonosis - Capsule spherical, thick walled with ovoidal pylome; boundary wall thick, surrounded by an equatorially placed wide membraneous wing, double walled with radially arranged broad folds, spongeous, with slight perforations. No tabulation discernible.
Measurements
Shell size: holotype: 80 x 128 μm, range: 70-80 x 110-145 μm
Central body diameter: holotype: 80 μm, range: 70-80 μm
Flange width: holotype: 31.5 μm, range: 30-45 μm
Comparison - Thalassiphora maxima sp. nov. differs from other known specics of the genus in having large spɔngoous membrane with perforations. Thalassiphora delicala Williams & Downie (1966) resembles in having perforate ornamentation of periphragm but differs in its delicate membraneous flange with no radial foldings. The present specimens are also much bigger in size.