Antedon
>
Antedon is a genus of sessile, stemless crinoids. The genus first appeared in the fossil record in the Cretaceous period. Wikipedia
Phylum: Echinodermata
Class: Crinoidea
Genus: Antedon; de Freminville, 1811
Scientific name: Antedon
Order: Comatulida
Family: Antedonidae
Domain: Eukaryota