Figure 9.

Lepisosteus osseus. Stages 32-34. A) Stage 32, whole larva. B) Stage 32, head only. C) Stage 33, whole larva. D) Stage 33, head only. E) Stage 34, whole larva. F) Stage 34, head only. pv = pelvic fin anlage ol = olfactory organ ao = adhesive organ t = tooth bud mf = median fin op = operculum