Pterocystidiopsis velata Deflandre and Cookson, 1955

NOW Thalassiphora. Originally Pterocystidiopsis, subsequently (and now) Thalassiphora, thirdly Disphaeria.
Taxonomic senior synonym: Pterospermopsis (now Thalassiphora) pelagica, according to Benedek and Gocht (1981, p.59) and Sarjeant (1981, p.117) — however, Brinkhuis and Biffi (1993, p.179) retained Pterocystidiopsis (as and now Thalassiphora) velata.

Holotype: Deflandre and Cookson 1955, pl. 8, fig. 8.
Locus typicus: Hay-Denmark railway deviation at 345 miles, Western Australia
Stratum typicum: Early Tertiary

Original description: Deflandre and Cookson, 1955, p. 291
Central shell ellipsoidal with a slightly thickened membrane, from which groups of radially arranged fibrils diverge towards the periphery of the relatively wide,
delicate, finely reticulate membrane that envelops the shell.