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. 2023 Oct 16;378(1891):20220552. doi: 10.1098/rstb.2022.0552

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© 2023 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 5. — Didelphis adopts a neutral to flexed head posture during swallowing (n = 31 swallows from two individuals), with stereotyped hyoid trajectories across an observed range of swallowing head postures. (a) Opossum Am swallows with average head posture ranging from 70–95°. (b) Opossum S swallows with head posture ranging from 100–130°. (c) shows hyoid trajectory in right lateral view during swallowing across different head postures in both individuals. Each trajectory is coloured based on the average head posture during each swallow. Arrows indicate the direction of hyoid travel.