Orthonychia enorme (Lindström, 1884), Silurian Eke Formation, Gotland. (A) SNSB-BSPG 2023 X 13, specimen with distinct co-marginal ribs and longitudinal lirae. (A1) Lateral view. (A2) Initial whorls in oblique apical view. (A3) Dorsal lateral view. (A4) Dorsal view. (B) SNSB-BSPG 2023 X 15, lateral view.

 
 
  Part of: Nützel A, Ebbestad JO, Seuss B, Munnecke A, Mapes RH, Cook AG (2023) On Paleozoic platycerate gastropods. Zitteliana 97: 29-51. https://doi.org/10.3897/zitteliana.97.115688