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Fig. 9 | The Journal of Basic and Applied Zoology

Fig. 9

From: Functional morphological study of the choana in different bird species

Fig. 9

High magnification of ventral surface of skull of hoopoe shows the maxillary process of the palatine bone (Map), maxillopalatine process (MP), vomer bone (arrow) is absent and replaced by a longitudinal ribbon of collagenous connective tissue, choana fossa (Fc), ventral crest (Vc), ventral fossa (Vf), Pterygoid (Pt), and parasphenoid (Sph). Upper right, photomicrograph of a transverse section of roof of hoopoe shows the collagenous connective tissue. (Masson’s Trichrome)

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