Kedo (in Paleontol. Stratigr. BSSR 5: 66. 1966) inadmissibly designated a new neotype (incorrectly termed paratype): № 1209 [Institute of geological sciences, National Academy of Sciences of Belarus, Minsk, Belarus].
Holotype was originally described from different (palaeo)geographic place than neotype: Kalinin mine, Verkhne-Gubakhinskie mines, Kizelovsky coal basin, western slope of the Middle Urals, Perm' territory, Russian Federation.