Bipolaribucina oblongata
From dinoflaj3
"oblongata" Jiabo, 1978, p.58, pl.29, figs.1–3. Holotype: Jiabo, 1978, pl.29, fig.2. NOW Peltiphoridium oblongatum. Originally Bipolaribucina oblongata, subsequently Impletosphaeridium oblongatum (combination illegitimate), thirdly Impletosphaeridium elongatum, fourthly (and now) Peltiphoridium oblongatum. Age: Early Tertiary.
Parent: Bipolaribucina