aequisculpta
Type AIM MA70970
Type locality J41/f8498 Target Gully, Oamaru.
45.08819°S 170.96341°E
Target Gully Shellbed Column of Park, 1918, p. 80, fig. 35. Rifle Butts Formation M. Gage 1957.
(Holotype) Holotype in Auckland Museum (Dr. H. J. Finlay collection) .
Localities Target Gully, Oamaru (type) and Pukeuri, near Oamaru Awamoan(now Lower Altonian), Middle Miocene.
Powell states "Shell of moderate size, compact, fusiform. Whorls broadly rounded except for a weak subsutural concavity. Base gradually and evenly contracted. Spire slightly taller than aperture plus canal. Whorls 9, including typical six-whorled p•otoconch (initial 3 whorls missing in holotype) . Post-nuclear spire-whorls with regular broadly rounded axiais not reaching the fasciole, 13 on the penultimate. The whole shell crossed by one series of close spaced rounded spiral threads more prominent in the interspaces of the axials. Ten spirals on the spire-whorls and about 24 on body-whorl, with a further 9, slightly stronger, on the neck and fasciole. Aperture narrow with a deep rounded subsutural sinus and an open canal of moderate length. Outer lip slightly variced, with 18 weak entering lamellae on the inside. The inner lip is smooth except for a weak parietal tubercle opposite the sinus. Height, 7 mm. diameter, 3.1 mm."