Spiniferites cingulatus ssp. perforatus (Clarke and Verdier, 1967) Lentin and Williams, 1973

Originally Hystrichosphaera cingulata var. perforata, subsequently Spiniferites cingulatus ssp. perforatus, thirdly Spiniferites? cingulatus ssp. perforatus.
Taxonomic senior synonym (at subspecific rank): Hystrichosphaera cingulata var. reticulata (now Pterodinium cingulatum subsp. reticulatum), according to Clarke et al. (1968, p.181).

Holotype: Clarke and Verdier, 1967, pl.9, fig.2; Jan du Chêne et al., 1986, pl.89, figs.1-3
Locus typicus: Southern Cliff, Isle of Wight, England
Stratum typicum: Cenomanian-Middle Senonian

Original diagnosis: Clarke and Verdier, 1967, p.45: Hystrichosphaera cingulata ssp. perforata
A variety of H. cingulata having a finely perforate sculpture on the plates and which may or may not be present on the ledges. The ledges are higher at the junction of the plates but the supporting process, although occasionally bifurcate, never protrudes beyong the edge of the ledge.

Measurements: Holotype Range
Overall length 81 µm 75-82 µm
Overall breadth 66 µm 55-66 µm
Height of ledges 14 µm 5-15 µm

Affinities:
Clarke and Verdier, 1967, p.45: Hystrichosphaera cingulata var. perforata
H. cingulata var. perforata differs from all other varieties of H. cingulata in the presence of a micronegative sculpture.