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Pterodinium cingulatum ssp. reticulatum
From Fensome et al., 2019:
Pterodinium cingulatum ssp. reticulatum (Davey and Williams, 1966a, p.39, pl.1, fig.10; pl.2, fig.4) Lentin and Williams, 1981, p.238. Holotype: Davey and Williams, 1966a, pl.1, fig.10; pl.2, fig.4. Originally Hystrichosphaera cingulata var. reticulata, subsequently Spiniferites cingulatus subsp. reticulatus, thirdly Spiniferites? cingulatus subsp. reticulatus, fourthly (and now) Pterodinium cingulatum subsp. reticulatum. Taxonomic junior synonym: Hystrichosphaera cingulata var. perforata, according to Clarke et al. (1968, p.181). Age: Cenomanian.
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Locus typicus: Fetchum Mill, Surrey, England
Stratum typicum: Cenomanian
Original diagnosis: Davey and Williams, 1966, p. 39: Hystrichosphaera cingulata ssp. reticulata
A variety of H. cingulata with central body composed of smooth endophragm and strongly reticulate periphragm often somewhat thickened. Gonal " processes " not protruding above sutural crests, processes acting more or less as supporting structures for crests. Processes simple or terminating with small bifurcation.
Dimensions: holotype: diameter of central body 40 by 55 µm, height of crests up to 14 µm. Range: diameter of central body 33-59 µm, height of crests up to 17 µm.
Pterodinium cingulatum ssp. reticulatum (Davey and Williams, 1966a, p.39, pl.1, fig.10; pl.2, fig.4) Lentin and Williams, 1981, p.238. Holotype: Davey and Williams, 1966a, pl.1, fig.10; pl.2, fig.4. Originally Hystrichosphaera cingulata var. reticulata, subsequently Spiniferites cingulatus subsp. reticulatus, thirdly Spiniferites? cingulatus subsp. reticulatus, fourthly (and now) Pterodinium cingulatum subsp. reticulatum. Taxonomic junior synonym: Hystrichosphaera cingulata var. perforata, according to Clarke et al. (1968, p.181). Age: Cenomanian.
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Locus typicus: Fetchum Mill, Surrey, England
Stratum typicum: Cenomanian
Original diagnosis: Davey and Williams, 1966, p. 39: Hystrichosphaera cingulata ssp. reticulata
A variety of H. cingulata with central body composed of smooth endophragm and strongly reticulate periphragm often somewhat thickened. Gonal " processes " not protruding above sutural crests, processes acting more or less as supporting structures for crests. Processes simple or terminating with small bifurcation.
Dimensions: holotype: diameter of central body 40 by 55 µm, height of crests up to 14 µm. Range: diameter of central body 33-59 µm, height of crests up to 17 µm.