Back
Culversphaera velata
Culversphaera velata (Clarke and Verdier, 1967, p.51–52, pl.10, figs.1–2; text-fig.22) Prince et al., 2008, p.88.
Originally Nematosphaeropsis, subsequently Spiniferites?, thirdly (and now) Culversphaera.
Holotype: Clarke and Verdier, 1967, pl.10, fig.2.
Age: Santonian.
Original description: Clarke and Verdier, 1967, p.52
Main body round or oval, wall thick (up to 4 µ) showing fine, evenly distributed perforations. Tabulation distinct but there is no obvious girdle present. Plates bordered by very high, almost transparent ledges with a support at each junction which protrudes slightly above the top of the ledge. The distal extremity of the supports (processes) are bifid or trifid and these are connected in a similar manner to those in Cannosphaeropsis.
Dimensions: Holotype: Overall diameter 105 µm, diam. main body 55 µm, length of processes + ledge (max.) 32 µm, height of ledges (max.) 20 µm Range: Overall diameter 90-120 µm, diam. main body 45-65 µm length of processes + ledge (max.) 24-36 µm, height of ledges (max.) 17-26 µm.
Originally Nematosphaeropsis, subsequently Spiniferites?, thirdly (and now) Culversphaera.
Holotype: Clarke and Verdier, 1967, pl.10, fig.2.
Age: Santonian.
Original description: Clarke and Verdier, 1967, p.52
Main body round or oval, wall thick (up to 4 µ) showing fine, evenly distributed perforations. Tabulation distinct but there is no obvious girdle present. Plates bordered by very high, almost transparent ledges with a support at each junction which protrudes slightly above the top of the ledge. The distal extremity of the supports (processes) are bifid or trifid and these are connected in a similar manner to those in Cannosphaeropsis.
Dimensions: Holotype: Overall diameter 105 µm, diam. main body 55 µm, length of processes + ledge (max.) 32 µm, height of ledges (max.) 20 µm Range: Overall diameter 90-120 µm, diam. main body 45-65 µm length of processes + ledge (max.) 24-36 µm, height of ledges (max.) 17-26 µm.