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Ellipsoidictyum punctatum

From Fensome et al., 2019:
Ellipsoidictyum punctatum (Jain, 1977b, p.186–187, pl.4, figs.51–52) Below, 1981a, p.47. Holotype: Jain, 1977b, pl.4, fig.51. Originally Dictyopyxidia, subsequently (and now) Ellipsoidictyum. Age: early Albian.

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Original description: [Jain, 1977b]:

Dictyopyxidia punctata sp. nov.
PI. 4, figs. 51-52

Holotype - PI. 4, fig. 51; Slide no. 5050-2.
Locality - Kallakkudi Limestone Quarry II, Dalmiapuram, South India.
Horizon - Grey Shale Member, Dalmiapuram Formation; Early Albian.
Diagnosis - Cyst spherical, double layered, periphragm reticulate, muri low, punctate, luminae irregular, polygonal. Cingulum present. Archaeopyle apical, margin angular.

Measurements Holotype Range
Cyst diameter 66 μm 55-70 μm

Comparison - The absence of sulcus and the presence of cingulum precludes its placement under Ellipsoidictyum Klement (1960) and Cassiculosphaerida Davey (1966). D. punctata sp. novo differs from D. areolata Cookson & Eisenack (1960), D. circulata Clarke & Verdier (1967) and D. reticulata (Valensi) Lentin & Williams (1973) in having punctate muri.

Remarks - Dictyopyxidia has a common representation in the present dinoflagellate assemblage. Some specimens do not clearly show the presence of a cingulum which suggests their placement under the genus Cassiculosphaeridia Davey. The choice of the genus therefore becomes arbitrary and needs careful observation.
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