Mauidrillia secta
General description:
Differing from all other species in the deeply incised lines which cut the surface into broad, rounded, spiral folds. Two or three linear grooves below periphery on spire-whorls, nine on body-whorl and base, plus five linear-spaced weaker cords on the anterior end. Subsutural fold moderate. Shoulder without spiral sculpture. Axiais very oblique, planed off above, 13 per whorl, strongest at periphery, where they are sharply tubercular, but becoming obsolete before reaching lower suture.
Height, 12 mm.; diameter, 4.5 mm.
Locality : Aldinga, lower beds, South Australia (Finlay coll.) (Janjukian) Lower Miocene.
Taxonomic name: