Halistemma striata

Totton, 1965

Presently identified only by its very distinctive nectophores. These are large, robust structures, with prominent thrust block and deep axial wings. There are 3, slightly oblique but complete, pairs of vertical lateral ridges. Ostial to these there is a pair of lateral ridges, each of which bifurcates shortly after leaving the apico-laterals, with the upper branch running down to the ostium, while the basal branch heads toward the infra-lateral but peters out before reaching it.

%LABEL% (%SOURCE%)