Hayamiella semiplicata (Brösamlen, 1907)

pl. 6: figs 2–15 in Gründel et al. (2015)

2017 Hayamiella semiplicata (Brösamlen, 1907) – Gründel, Keupp and Lang: 100, pl. 6, figs 2–15 (here more synonymy and chresonymy).

Material.

1 specimen, SNSB – BSPG 2016 XXI.

Remarks.

In the present specimen, the reduction of the axial ribs occurs very early. Approximately 4 / 5 ths of the last whorl have no axial ribs.