. Text book of vertebrate zoology. Vertebrates; Anatomy, Comparative. Fig. 324. Skull of duck, from Wiedersheim. als, alisphenoid; ag, angulare; apf, foramen palatinum anterius; ar, articulare; bo, basioccipital; bpg, basipterygoid ; bs, basisphenoid; bi, basitemporal; d, dentary; en, external nares; et/i, ethmoid ; eo, exoccipital; eu, Eustachian opening; fin, foramen magnum; fr, frontal; ic, fora- men for internal carotid; j, jugal; Ic, lachrymal ; jnx, maxilla; inxp, palatine process of maxillary; n, nasal; nfx, nasal process of premaxillary; p, parietal; pg, pterygoid; pi, palatine; pn, po
. Text book of vertebrate zoology. Vertebrates; Anatomy, Comparative. Fig. 324. Skull of duck, from Wiedersheim. als, alisphenoid; ag, angulare; apf, foramen palatinum anterius; ar, articulare; bo, basioccipital; bpg, basipterygoid ; bs, basisphenoid; bi, basitemporal; d, dentary; en, external nares; et/i, ethmoid ; eo, exoccipital; eu, Eustachian opening; fin, foramen magnum; fr, frontal; ic, fora- men for internal carotid; j, jugal; Ic, lachrymal ; jnx, maxilla; inxp, palatine process of maxillary; n, nasal; nfx, nasal process of premaxillary; p, parietal; pg, pterygoid; pi, palatine; pn, posterior nares; ps, presphenoid; px, premaxilla; q, quadrate ; qj, quadratojugal; so, supraoccipital; sg, squamosal; iy, tympanic cavity; w, vomer; //, ?', IX, X, XII, openings for corresponding Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Kingsley, J. S. (John Sterling), 1854-1929. New York, H. Holt and Company
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