Index of species » Echinodermata » Echinozoa » Temnopleuroidae » Triplacidia van den heckei Triplacidia van den heckei (†) Triplacidia van den heckei, Agass. Echinoderma from Eocene in Talamanca (Bages), in 1st image in top view and in 2nd image in lateral view. [photos Marta Queralt López Salvans / Museum of Geology Valentí Masachs]