. The chordates. Chordata. !!()() Comparative Morphology of Chordates flying pterosaurs. Among Mammalia, chiefly terrestrial, are ceta- ceans, sirenians, seals, and other aquatic animals, flying bats, and such gliders as the "flying" squirrel, "flying" phalanger, and Fig. 605. Gobies, Periophlhalmus. (Courtesy, Brehm: "Tierleben," Leipzig, Bibliographisches Institut.) Among Aves are numerous flightless terrestrial birds and many aquatic birds, some of them incapable of flight. As one vertebrate Class succeeds another, this radiating pattern of. Please not


. The chordates. Chordata. !!()() Comparative Morphology of Chordates flying pterosaurs. Among Mammalia, chiefly terrestrial, are ceta- ceans, sirenians, seals, and other aquatic animals, flying bats, and such gliders as the "flying" squirrel, "flying" phalanger, and Fig. 605. Gobies, Periophlhalmus. (Courtesy, Brehm: "Tierleben," Leipzig, Bibliographisches Institut.) Among Aves are numerous flightless terrestrial birds and many aquatic birds, some of them incapable of flight. As one vertebrate Class succeeds another, this radiating pattern of. 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 Rand, Herbert W. (Herbert Wilbur), 1872-1960. Philadelphia : Blakiston


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