Fischer, Claus, and Wilko H. Ahlrichs. “Cephalodella ungulata n.sp. (Monogononta: Notommatidae), a New Rotifer Species from North-West Germany, With Notes on C. Tenuiseta (Burn, 1890)”. Zootaxa 1378, no. 1 (December 11, 2006): 49–59. Accessed April 3, 2025. https://mapress.com/zt/article/view/zootaxa.1378.1.4.