Eoendothyranopsis rotayi subsp. taimyrica M. F. Solovieva, 1967 was considered a subjective junior synonym of E. rotayi (Lebedeva, 1954) by Mamet (1977).
Eoendothyranopsis rotayi sensu Lebedeva differs from E. taimyrica Solovieva by less deep umbilici, more moderate deviations of coiling axis, a thinner wall, and more asymmetrical secondary deposits. Therefore we propose to keep E. taimyrica as a separate species.
Vachard (2018) pers. com.