Soleniscus, Meek & Worthen, 1861

Yoo, E. K., 1994, Early Carboniferous Gastropoda from the Tamworth Belt, New South Wales, Australia, Records of the Australian Museum 46 (1), pp. 63-120 : 87

Soleniscus sp.

PI. 18 figs 1, 5-7

Description. Shell small, moderately high-spired fusiform, anomphalous. Protoconch small, simple. Teleoconch of about 4Y2 smooth whorls, shell profile gently rounded, suture shallow; last whorl much inflated; base rounded. Aperture suboval, pointed posteriorly, rounded anteriorly; outer lip moderately thick, arcuate; columellar lip arcuate with columellar fold; parietal inductura covered with a cluster of nodules.

Locality. Approximately 250 m west of Babbinboon Lane in Swains Gully , 15 km south-est of Somerton, NSW (Locality 25) .

Stratigraphic position. In bioclastic limestone, 130 m above the base of Namoi Formation.

Geological age. Middle Toumaisian.

Remarks. This form is identical to S. callosus Yoo in size and shape; the only difference is that this form has a slightly larger pleural angle and the parietal inductura which is covered with a cluster of nodules. The nodules seem to disappear inside the shell probably by resorption. One specimen (PI. 18 fig. 1), with a broken aperture, has no sign of nodules on the parietal area, but is considered to be the same form on the basis of the pleural angle and the much inflated final whorl.