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"Cartilaginous Cranium of the Pike (Esox lucius), with its intrinsic ossifications. A, top view; 3, small ossifications in the rostrum; N, N, nasal fossae; I Or, interorbital septum; Eth, ethmoid; Prf, Ptf, prefrontal and postfrontal; EpO, epiotic; OpO, opisthotic; Pt, pteriotic; EO, exoccipital." -Whitney, 1911

Pike Cranium

"Cartilaginous Cranium of the Pike (Esox lucius), with its intrinsic ossifications. A, top view; 3,…

"Cartilaginous Cranium of the Pike (Esox lucius), with its intrinsic ossifications. B, side view: V, VII, exits of trigeminal and of pneumogastric nerves; 3, small ossifications in the rostrum; I Or, interorbital septum; Eth, ethmoid; Prf, Ptf, prefrontal and postfrontal; PrO, proötic; EpO, epiotic; OpO, opisthotic; Pt, pteriotic; EO, exoccipital; BO, basioccipital; BS, basisphenoid; AS, alisphenoid." -Whitney, 1911

Pike Cranium

"Cartilaginous Cranium of the Pike (Esox lucius), with its intrinsic ossifications. B, side view: V,…