Text-book of embryology. Embryology. 126 EMBEYOLOGY OF THE LOWES VEETEBEATES oh. anterior and posterior naris: the morphologically posterior naris coming to lie in front of that which was originally anterior. In

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Download this stock image: . Text-book of embryology. Embryology. 126 EMBEYOLOGY OF THE LOWES VEETEBEATES oh. anterior and posterior naris: the morphologically posterior naris coming to lie in front of that which was originally anterior. In the Amphibian and Amniote the upper lip, which completes the buccal cavity in front, is situated between the anterior and posterior narial openings, so that the latter opens into the buccal cavity. Fig. 69.—Ventral views of head region of larva of Procerus at stages 31 (A), 32 (B), 34 (C), 34 (D), 35 (B), and 36 - (P), to illustrate the development of the olfactory organ. c.o, cement - RDJ9R7 from Alamy's library of millions of high resolution stock photos, illustrations and vectors.