. Biology of the vertebrates : a comparative study of man and his animal allies. Vertebrates; Vertebrates -- Anatomy; Anatomy, Comparative. C ' D Fig. 29. Stegocephalians, extinct primitive amphibians. A, Amphiba- mus; b, Diplocaulus; c, Cacops; d, Eryops. (From Newman, The Phy- lum Chordata, copyright 1939, by permission of The Macmillan Com- pany, publishers. After Osborn.) (2) gymnophiona.—Of modern amphibians the naked, legless Gym- nophiona are the least familiar. They include about 50 tropical species from Africa, South America, Ceylon, and In- dia, which burrow in the ground. No fossils
. Biology of the vertebrates : a comparative study of man and his animal allies. Vertebrates; Vertebrates -- Anatomy; Anatomy, Comparative. C ' D Fig. 29. Stegocephalians, extinct primitive amphibians. A, Amphiba- mus; b, Diplocaulus; c, Cacops; d, Eryops. (From Newman, The Phy- lum Chordata, copyright 1939, by permission of The Macmillan Com- pany, publishers. After Osborn.) (2) gymnophiona.—Of modern amphibians the naked, legless Gym- nophiona are the least familiar. They include about 50 tropical species from Africa, South America, Ceylon, and In- dia, which burrow in the ground. No fossils are known in this order. In appearance these animals resemble worms (Figs. 30 and 28c), although pos- sessing a vertebral column of as many as 250 vertebrae, and numerous other char- acteristics which place them unmistak- ably with the Amphibia. As examples of the order may be cited the "blind caecilian," Caecilia, of West Africa, and Ichthyophis, of Ceylon. (3) urodela (caudata) .—Urodeles are newts, mud puppies, and sala- manders. They retain their tadpole-like tails throughout life, and many of them never emerge from existence in water, although some do so, living. 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 Walter, Herbert Eugene, b. 1867; Sayles, Leonard Perkins, 1902-. New York : Macmillan Co.
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Keywords: ., bookcentury1900, booksubjectanatomycomparative, booksubjectverte
