Name:
Phellia spitsbergensis Reference: Danielssen D. C., 1890, Plate XV , fig. 3
View: Column, cross section
Caption: "Fig. 3. Do., transversal section of half of the body and gullet-tube, magnified. R. Directive septa; a. principal, perfect septa; b. Secondary, perfect septa; c. Imperfect, tertiary septa; d.
Acontia; e. Reproductive organs."