. Amphioxus and the ancestry of the vertebrates [microform]. Vertebrates; Chordata; Fishes; Ascidiacea; Vertébrés; Cordés; Poissons; Ascidiacés. - ch â a-ci CO. J* J^ e-c Fig. 35.â./. Sclioiuatic transverse section throiii;h i)liarvn<;eal region of Ani- On tlie left is a lirancliial bar, cut lengthwise, and on tiie right a gill-slit. /.'. Si-lieinatic transverse section through Selachian enil)ryo. (After Hi)\l'.KI.) (j/.t. Atrial chamber, i'ronephric duct. Nephrustonie of proncjihric liibiilc. Cross-section of excretory tubule in Ainjiliioxtis. '. gl. Glomer
. Amphioxus and the ancestry of the vertebrates [microform]. Vertebrates; Chordata; Fishes; Ascidiacea; Vertébrés; Cordés; Poissons; Ascidiacés. - ch â a-ci CO. J* J^ e-c Fig. 35.â./. Sclioiuatic transverse section throiii;h i)liarvn<;eal region of Ani- On tlie left is a lirancliial bar, cut lengthwise, and on tiie right a gill-slit. /.'. Si-lieinatic transverse section through Selachian enil)ryo. (After Hi)\l'.KI.) (j/.t. Atrial chamber, i'ronephric duct. Nephrustonie of proncjihric liibiilc. Cross-section of excretory tubule in Ainjiliioxtis. '. gl. Glomerulus, cu-. C'uelom. I'Lndostylar ccelom. Hranchial artery in ./; sub-intestinal vein in H, Other letters as in jirevious figures. â In Ji the future o])eiiing of the mescmejihric tulnile into the pronejiliric duct is indicated bj dotted lines on the right. The vessel connecting the sub- intestinal vein with the aorta is placed on the left of tl:e alimentary canal for com- parison with Fig. A. It is really only present on the riglit side, althougli a riiflimcnt occurs on the left. (See Note 6.) The glomeruli of the tubules in Amphioxus are sapiilicd by blood-vessels which connect the dorsal aorta with the branchial artery. It should be remembered that the bran- chial artery represents the anterior portion of the sub-. 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
