Lutova, Z. V. (1981). ???????????? ? ???????????? ???????? ?????? ??????? ?????? - Stratigraphy and Foraminifera from the Callovian of the North of Middle Siberia. ??. ???? ?? ?? ???? - Proceedings of the Institute of Geology and Geophysics, Siberian Filiale of the Academy of sciences USSR. 472: 1-134., available online at (http://www.ipgg.sbras.ru/ru/science/publications/publ-stratigrafiya-i-foraminifery-kelloveya-severa-sredney-1981-54345) page(s): p. 29 pl. 9 figs. 3-4, pl. 10 fig. 1(Holotype)
Lutova, Z. V. (1981). ???????????? ? ???????????? ???????? ?????? ??????? ?????? - Stratigraphy and Foraminifera from the Callovian of the North of Middle Siberia. ??. ???? ?? ?? ???? - Proceedings of the Institute of Geology and Geophysics, Siberian Filiale of the Academy of sciences USSR. 472: 1-134., available online at (http://www.ipgg.sbras.ru/ru/science/publications/publ-stratigrafiya-i-foraminifery-kelloveya-severa-sredney-1981-54345) page(s): p. 29 pl. 9 figs. 3-4, pl. 10 fig. 1(Holotype)
