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Fig. 6. Camera lucida drawings of the feeding apparatus in four biting coral reef
teleosts with intramandibular joints marked by open circles. Proximal
(articular) and distal (dentary) components of the joints are marked by solid
black bars (see text for explanation). (A,B) joints rotated, (C,D) joints
relaxed. (A) Pomacanthus (f. Pomacanthidae); (B)
Ctenochaetus, (f. Acanthuridae); (C) Scarus, (f. Scaridae);
(D) Escenius, (f. Blennidae). Scale bars, 10 mm, except D, 0.1
mm.Labelling follows Fig.
2.