Figure 7
From: Origin and evolutionary plasticity of the gastric caecum in sea urchins (Echinodermata: Echinoidea)
Digestive tract anatomy of selected irregular sea urchin taxa (Laganidae - Mellitidae). Laganidae (A, B), Fibulariidae (C), Rotulidae (D), Echinarachniidae (E, F), Dendrasteridae (G-I), Astriclypeidae (J), and Mellitidae (K, L). (H) from [57, Fig. 3] - reproduced in modified form with kind permission from the Marine Biological Laboratory, Woods Hole, MA, USA. AB = aboral view. e = esophagus, s = sacculated abaxial edge of the stomach. Not to scale.