Reference

Alan Warren, J. Fyda, Weibo Song (2002): The morphology of the poorly-known freshwater urostylid ciliate Neokeronopsis spectabilis (Kahl, 1932) nov. gen. nov. comb., (Ciliophora: Urostylidae), with notes on its morphogenesis – European Journal of Protistology – 38: 195 - 206.