Dioxya filigrana

"filigrana" (Benedek, 1972, p.12–13, pl.4, figs.3a–b) Morgan, 1977, p.131.  Holotype: Benedek, 1972, pl.4, figs.3a–b; Benedek and Sarjeant, 1981, figs.4,8, nos.1–2.  NOW Phthanoperidinium.  Originally Deflandrea?, subsequently Vozzhennikovia?, thirdly Dioxya, fourthly (and now) Phthanoperidinium.  Age: middle Oligocene.

Parent: Dioxya