outline of the shell in ventral view
swimming, specimen showing the wings in downward strike position, colour photo
specimen with most of the caudal spine still present, colour photo
median tooth of the radula, SEM photo (after Richter)
showing part of a repaired shell and the shape of the caudal septum
diagram showing the development of the soft parts through a minute and a skinny stage
three swimming specimens showing different degrees of contraction
swimming specimen in ventral view, colour photo
shell-growth as representative for most Cavoliniidae is shown in this figure
distribution map