Keywords: Umbellula pellucida.png en A drawing of an umbellulid sea pen Umbellula pellucida Kükenthal W 1915 Pennatularia Das Tierreich 43 1 “132 http //biostor org/reference/58836 Reprint on biostor org 1915 Willy Georg Kükenthal 1861 “1922 PD-old-auto-1923 1922 Umbellula Willy Georg Kükenthal |