Dioxya filigrana
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"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