Thoracosphaera arctica
From dinoflaj2
"arctica" Gilbert and Clark, 1983, p.400, pl.1, figs.1-15. Holotype: Gilbert and Clark, 1983, pl.1, fig.1. NOW Caracomia. Originally Thoracosphaera, subsequently Sphaerodinella, thirdly (and now) Caracomia. Age: Late Miocene-Holocene.
Parent: Thoracosphaera
