Order (Singh, 1952) & Family (Jollos 1917, Zulueta, 1917): Limax-form; monopodial;
clear, hemispherical eruptive, anterior bulges (Illustrated Guide, 1985).
Genus: No flagellate stage; uninulceate (Illustrated Guide, 1985).
Vahlkampfia sp.,
cell body μm long, μm wide,
x 640, Nasu, Tochigi Pref., Japan, 2001 collected by H. Shiomizu, photo by Y. Tsukii
20 μm
40 μm
60 μm; x 1000