From Fensome et al., 2019:

"Pocockia", Lentin and Williams, 1973, p.114.
Substitute name for Evittia Pocock, 1972, p.93 (an illegitimate name).
Taxonomic senior synonym: Ovoidinium, according to Lentin and Williams (1976, p.162; 1989, p.269).
Taxonomic senior synonym: Ascodinium, according to Helenes (1983, p.258) -- however Ovoidinium is now generally retained, with Deflandrea (as Ovoidinium) cincta assigned to it.
Type: Cookson and Eisenack, 1958, pl.4, fig.3, as Deflandrea cincta.