Name: Diadumene franciscana
Reference: Hand C. H., 1956, Page 231 , fig. 33
View: Column, cross section
Caption: "Figure 33. *Diadumene franciscana*, new species. Cross section of the column at the level of the actinopharynx showing a pair of directives, mesenteries of three orders and a siphonoglyph." Permission to display images granted by the University of San Francisco.