Sigmoidella Cushman & Ozawa 1928

Sigmoidella elegantissima (Parker & Jones 1870 in Brady et al. 1870) (Fig. 17:10, 11)

Description. See Parker (2009, p. 422, fig. 305).

Distribution within study area. Sigmoidella elegantissima (Parker & Jones 1870) only occurred in the channel sample between Heron and Wistari Reefs.