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Fig. 2. The cranial muscles that were examined in banded watersnakes (Nerodia
fasciata). Note that some additional cranial muscles not examined here
have been included in this illustration. The illustration was drawn using a
Wild Heerbrug (M3Z) binocular microscope with camera lucida. (A) Lateral view
of the superficial adductor mandibulae muscle group. (B) Lateral view of
cranium with the m. adductor externus profundus (AEP) removed to expose the m.
adductor posterior (not measured here). (C) Lateral deep view of the cranium
showing the deeper muscles of the adductor mandibulae group.