Orthonychia yutaroi Ebbestad, sp. nov., holotype PMU 37146. (1, 2) Right lateral and anterior views. (3) Detail of initial whorls. (4) Detail of left periphery with arrow pointing to lamella. (5) Detail of left periphery with arrow pointing to lamella.

 
 
  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