Ripe Chick's Skull Profile

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“Ripe chick’s skull, longitudinal section, vied inside, x 3 diameters; after Parker. px, premaxillary; aln, ali-nasal cartilage; en, septo-nasal; n, nasal bone; l, lacrymal; pe, perpendicular plate of ethmoid, ps, prespeenoidal region; as, alisphenoid; f, frontal; p, parietal; sq, squamosal; so, superoccipital; eo, exoccipital; oc, occipital condyle; st, the cross-like object, the stapes, whose foot fits fenestra ovalis; q, quadrate; pg, pterygoid; qj, quadrato-jugal; jugal; pa, palatine; mx, maxillary. In the mandible: d, dentary; su, surangular; a, angular; ar, atricular; iap, internal angular process; pap, posterior angular process. 2, optic foramen; 5, foramen ovale, for inferior divisions of the 5th nerve.” Elliot Coues, 1884


Bird Anatomy


Elliot Coues Key to North American Birds (Boston, MA: Estes and Lauriat, 1884)


TIFF (full resolution)

1583×2400, 1.3 MiB

Large GIF

675×1024, 209.4 KiB

Medium GIF

422×640, 95.6 KiB

Small GIF

211×320, 25.1 KiB