Figure 4 in Developmental patterns of the crocodilian and avian columella auris: reappraisal of interpretations of the derivation of the dorsal hyoid arch in archosaurian tetrapods

Figure 4. Development of the columella auris and surrounding tissues of Alligator mississippiensis. A and B, day-40 embryo, left lateral and right lateral view. C, day-40 embryo, right lateral view. D, day-42 embryo, right lateral and medial view. E, day-42 embryo, right lateral view. F, day-47 embryo, right lateral view. G, day-51 embryo, right lateral view. For abbreviations see the Appendix. A, B, and E–G, whole mounts; C and D, graphic reconstructions.