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"Brain of Polypterus. Upper aspect. a, medulia; b, corpora restiformia; c, cerebellum; d, lobi optici; e, hypophysis; f, fissura cerebri magna; g, nervus opticus; g', chiasma; h, hemispheres; i, lobus olfactorius; k, sinus rhomboidalis (fourth ventricle)." — Encyclopedia Britannica, 1893

Polypterus Brain

"Brain of Polypterus. Upper aspect. a, medulia; b, corpora restiformia; c, cerebellum; d, lobi optici;…

"Brain of Polypterus. Lateral aspect. a, medulia; b, corpora restiformia; c, cerebellum; d, lobi optici; e, hypophysis; f, fissura cerebri magna; g, nervus opticus; g', chiasma; h, hemispheres; i, lobus olfactorius; k, sinus rhomboidalis (fourth ventricle)." — Encyclopedia Britannica, 1893

Polypterus Brain

"Brain of Polypterus. Lateral aspect. a, medulia; b, corpora restiformia; c, cerebellum; d, lobi optici;…

"Brain of Polypterus. Lower aspect. a, medulia; b, corpora restiformia; c, cerebellum; d, lobi optici; e, hypophysis; f, fissura cerebri magna; g, nervus opticus; g', chiasma; h, hemispheres; i, lobus olfactorius; k, sinus rhomboidalis (fourth ventricle)." — Encyclopedia Britannica, 1893

Polypterus Brain

"Brain of Polypterus. Lower aspect. a, medulia; b, corpora restiformia; c, cerebellum; d, lobi optici;…