. Comparative anatomy. Anatomy, Comparative. THE ANCESTRY OF THE VERTEBRATES A, 64:. >-M ANDROCTONUS E. F AMMOCOETES G. Fig. 525.—Diagrams illustrating the hypothetical evolution of the vertebrate brair from the nerve cord of a primitive arthropod such as Branchippus (fairy shrimp). Supraesophageal ganglia are shown in solid black, prosomatic ganglia stippled, meso- somatic cross-hatched. A, olfactory nerve; B, optic nerve; C, nerve to median eye; P, prosomatic nerves; M, mesosomatic nerves. (Redrawn after Gaskell.). Please note that these images are extracted from scanned page images that
. Comparative anatomy. Anatomy, Comparative. THE ANCESTRY OF THE VERTEBRATES A, 64:. >-M ANDROCTONUS E. F AMMOCOETES G. Fig. 525.—Diagrams illustrating the hypothetical evolution of the vertebrate brair from the nerve cord of a primitive arthropod such as Branchippus (fairy shrimp). Supraesophageal ganglia are shown in solid black, prosomatic ganglia stippled, meso- somatic cross-hatched. A, olfactory nerve; B, optic nerve; C, nerve to median eye; P, prosomatic nerves; M, mesosomatic nerves. (Redrawn after Gaskell.). 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 Neal, Herbert V. (Herbert Vincent), 1869-1940; Rand, Herbert W. (Herbert Wilbur), 1872-1960. Philadelphia : P. Blakiston's Son
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