Figure 6 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 6. Development of the columella auris and surrounding tissues in Struthio camelus. A, day-11 embryo, ventro-right lateral view. B, day-12 embryo, ventro-right lateral view. C and D, day-13 embryo, postero-left lateral view. E, day-13 embryo, posterior view. F, day-13 embryo, postero-dorsal and posterior view. G, day-13 embryo, anterior view. For abbreviations see the Appendix. The dotted yellow circle represents the region of the tympanic process. The dotted red circle represents tympanic invagination. A and B, whole mounts; C–G, graphic reconstructions.