Zhuang, S. (1989). A study on stalactotheca in spirotheca of Fusulinids and some new genera and species with stalactotheca. ??????? - Acta Micropalaeontologica Sinica. 6(4): 357-371. page(s): p. 363 (Chinese), p. 369 (English), pl. 3, figs 5, 7-10, pl. 4, figs. 1-2 (holotype fig. 7a).