Rhynchonellata - Athyridida - Athyrididae

Alternative combination: Spirifer cadoricus

Synonyms: Athyris globulus Merla 1930, Athyris humeralis Merla 1930, Athyris irregularis Merla 1930, Athyris sagitta Merla 1930, Spirigera archimedis Stache 1878, Spirigera confinalis Stache 1878, Spirigera pusilla Stache 1878

Belongs to Janiceps according to R. Posenato 2001

Sister taxa: Janiceps bipartita, Janiceps emarginatiformis, Janiceps lozovskyi, Janiceps ogbinensis, Janiceps papilio, Janiceps peracuta

Average measurements (in mm): shell 23.0 x 26.2, valve 19.9 x 21.3