Polystephanephorus speciosus
From dinoflaj3
"speciosus" (Alberti, 1961, p.37, pl.9, fig.13) Riley and Sarjeant, 1972, p.3. Holotype: Alberti, 1961, pl.9, fig.13; Stancliffe and Sarjeant, 1990, pl.5, fig.6. NOW Adnatosphaeridium?. Originally Cannosphaeropsis, subsequently Polystephanephorus, thirdly Cannosphaeropsis?, fourthly (and now) Adnatosphaeridium?. Age: Bathonian–Callovian.
Parent: Polystephanephorus