original descriptionJuravleva, A.A. (1936). Die fossilen Diatomeen des Tunkin Kessels (Baikal-Gebiet). Trudy neftjanogo geologo-rasvedocnogo instituta Leningrad, series A,, Leif. 76(Palaeob. sborn., Lief 6): 47-64. page(s): p. 56; pl. 1, fig. 2 [details]