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Senoniasphaera microciliata
From Fensome et al., 2019:
(Jain, 1977b, p.178, pl.3, fig.25; pl.6, fig.78) Fensome et al., 2019a, p.43. Holotype: Jain, 1977b, pl.3, fig.25; Fensome et al., 2019a, fig.16P. Originally Canningia, subsequently Canningia?, thirdly (and now) Senoniasphaera. Questionable assignment: Helby (1987, p.324–325). Age: early Albian.
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Original description: [Jain, 1977b, p. 178]:
Canningia microciliata sp.nov.
PI. 3, fig. 25; PI. 6, fig. 78
Holotype -- PI.3, fig.25; Slide no. 5049-25.
Locality — Kallakkudi Limestone Quarry II, Dalmiapuram, South India.
Horizon – Grey Shale Member, Dalmiapuram Formation; Early Albian.
Diagnosis – Cyst oblong, no apical or antapical horn seen. Periphragm densely ornamented with fine cilia having bulbous base giving it coarsely granulate appearance. Cingulum absent. Archaeopyle apical, margin angular.
Measurements Holotype Range
Cyst size 60 x 56 µm 60-70 x 50-70 µm
Comparison -- C. microciliata sp. nov. differs from rest of the species in having ciliate periphragm.
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Comments Fensome et al., 2019a:
Jain (1977, p. 178) noted that the periphragm “… is densely ornamented with fine cilia having bulbous base …” giving the cyst a “… coarsely granulate appearance.” This species is clearly cavate, with no sign of connections between wall layers. Hence we transfer it to Senoniasphaera.
Stratigraphical occurrence. Jain (1977) described this species from the lower Albian of southern India.
(Jain, 1977b, p.178, pl.3, fig.25; pl.6, fig.78) Fensome et al., 2019a, p.43. Holotype: Jain, 1977b, pl.3, fig.25; Fensome et al., 2019a, fig.16P. Originally Canningia, subsequently Canningia?, thirdly (and now) Senoniasphaera. Questionable assignment: Helby (1987, p.324–325). Age: early Albian.
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Original description: [Jain, 1977b, p. 178]:
Canningia microciliata sp.nov.
PI. 3, fig. 25; PI. 6, fig. 78
Holotype -- PI.3, fig.25; Slide no. 5049-25.
Locality — Kallakkudi Limestone Quarry II, Dalmiapuram, South India.
Horizon – Grey Shale Member, Dalmiapuram Formation; Early Albian.
Diagnosis – Cyst oblong, no apical or antapical horn seen. Periphragm densely ornamented with fine cilia having bulbous base giving it coarsely granulate appearance. Cingulum absent. Archaeopyle apical, margin angular.
Measurements Holotype Range
Cyst size 60 x 56 µm 60-70 x 50-70 µm
Comparison -- C. microciliata sp. nov. differs from rest of the species in having ciliate periphragm.
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Comments Fensome et al., 2019a:
Jain (1977, p. 178) noted that the periphragm “… is densely ornamented with fine cilia having bulbous base …” giving the cyst a “… coarsely granulate appearance.” This species is clearly cavate, with no sign of connections between wall layers. Hence we transfer it to Senoniasphaera.
Stratigraphical occurrence. Jain (1977) described this species from the lower Albian of southern India.