Adnatosphaeridium vetusculum
From dinoflaj3
"vetusculum" Davey, 1974, p.45, pl.1, figs.1–2. Holotype: Davey, 1974, pl.1, fig.2. NOW Nexosispinum. Originally Adnatosphaeridium, subsequently Systematophora, thirdly (and now) Nexosispinum, fourthly Kiokansium. Age: early Barremian.
Parent: Adnatosphaeridium