Phthanoperidinium filigranum
From dinoflaj3
filigranum (Benedek, 1972, p.12–13, pl.4, figs.3a–b) Benedek and Sarjeant, 1981, p.325–327. Holotype: Benedek, 1972, pl.4, figs.3a–b; Benedek and Sarjeant, 1981, figs.4,8, nos.1–2. Originally Deflandrea?, subsequently Vozzhennikovia?, thirdly Dioxya, fourthly (and now) Phthanoperidinium. Bujak and Davies (1983, p.163) also proposed this combination. Age: middle Oligocene.
