Figure 5
From: Normal embryonic stages of the Longnose Gar, Lepisosteus osseus
Lepisosteus osseus. Stages 16-20. A). Stage 16, dorsal view. B) Stage 16, lateral view. C) Stage 17, anterior view. D) Stage 18, lateral view. E) Stage 19, lateral view. F) Stage 20, lateral view. ttb = trunk-tail bud sgc = limit of subgerminal cavity p = pronephric duct ov = optic vesicle d = diencephalon ao = adhesive organ ph = pharyngeal pouch op = operculum u = undercut trunk-tail bud