Gymnaster sirius
From dinoflaj2
"sirius" Ehrenberg, 1844a ex Schütt, 1891, p.20. Holotype: Ehrenberg, 1854, pl.18, fig.59; Schütt, 1891, fig.11. NOW Actiniscus. Originally Actiniscus (name not validly published), subsequently Dictyocha (name not validly published), thirdly Distephanus (name not validly published), fourthly Gymnaster, fifthly (and now) Actiniscus. Further information not available. Age: Miocene.
Parent: Gymnaster