Cannosphaeropsis robusta
From dinoflaj2
"robusta" Morgenroth, 1966a, p.19, pl.4, fig.1. Holotype: Morgenroth, 1966a, pl.4, fig.1. NOW Adnatosphaeridium. Originally Cannosphaeropsis, subsequently (and now) Adnatosphaeridium. Age: Early Eocene.
Parent: Cannosphaeropsis