BAUMGARTNER, P. O., DE WEVER, P. and KOCHER, R., 1980: Correlation of Tethyan Late Jurassic-Early Cretaceous radiolarian events. Gah. Micropal., 1980-2, 23-72, pls. 1-6.
HASE, A., 1961: A find of Monotis(Entomonotis)from eastern Yamaguchi Prefecture, Japan. Trans. Proc. Palaeont. Soc. Japan, N.S., no. 42, 79-87, pl. 12.