. Amphioxus and the ancestry of the vertebrates [microform]. Vertebrates; Chordata; Fishes; Ascidiacea; Vertébrés; Cordés; Poissons; Ascidiacés. pill 84 AXATOMY OF AMJ'J/IOXUii. segment of the body. Dorsal and ventral roots are entirely independent of one anotln;r, and at no point do they coa- lesce as they do in the Craniota. In further contrast to Un. Fig. 42 A. — Innervation of the region of the oral hood and snout. (After Haischek, slightly altered according to the statements of \'.\N WljHK.) c/i. Anterior end of notochord. ci. Buccal cirri, cn^, en'-. First and second cranial nerves with
. Amphioxus and the ancestry of the vertebrates [microform]. Vertebrates; Chordata; Fishes; Ascidiacea; Vertébrés; Cordés; Poissons; Ascidiacés. pill 84 AXATOMY OF AMJ'J/IOXUii. segment of the body. Dorsal and ventral roots are entirely independent of one anotln;r, and at no point do they coa- lesce as they do in the Craniota. In further contrast to Un. Fig. 42 A. — Innervation of the region of the oral hood and snout. (After Haischek, slightly altered according to the statements of \'.\N WljHK.) c/i. Anterior end of notochord. ci. Buccal cirri, cn^, en'-. First and second cranial nerves with their peripheral ganglia, cu. Rami cutanei dorsales. /.h. Left half of oral liood. Right half of oral hood. o. Olfactory pit. .?/', sp-. First and second dorsal spinal nerves, so. Sense-organ of oral hood (groove of Hat- sclu'k) indicated as if seen through body-well by transparency, v. X'eluni. z\ .Verve to left side of velum, Nerve to right side of velum. — The septa between the myotomes art indicated by dotted lines. The superficial nerves of oral hood arc rendered in black; the deeper nerves, which anastomose to form the plexus of Fusari, are left white. the condition met with in the latter there is no ganglionic enlargement on the dorsal root. m'.-MB. 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 Willey, Arthur, 1867-1942. New York; London : Mcmillan
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectfishes, bookyear1894
