FIGURE 2 Three species and their isolated pharynges. A in High degree of independence in the feeding apparatus of planarian FLatworms

FIGURE 2 Three species and their isolated pharynges. A: Dugesia sp.; B: Girardia sp.; C: Paucumara falcata; D–F: isolated pharynges of Dugesia sp., Girardia sp. and Paucumara falcata, respectively (intestinal, aboral side at the top and oral end at the bottom; scale bars: 500 µm).