Sphaerodinella arctica
From dinoflaj2
"arctica" (Gilbert and Clark, 1983, p.400, pl.1, figs.1-15) Keupp and Kohring, 1993, p.29. Holotype: Gilbert and Clark, 1983, pl.1, fig.1. NOW Caracomia. Originally Thoracosphaera, subsequently Sphaerodinella, thirdly (and now) Caracomia. This combination was not validly published in Keupp and Versteegh (1989, p.210), since these authors did not fully reference the basionym. Age: Late Miocene-Holocene.
Parent: Sphaerodinella
