Animal biology (1938) (17576091633)

Title: Animal biology

Identifier: animalbiology00wood (find matches)

Year: 1938 (1930s)

Authors: Woodruff, Lorande Loss, 1879-1947

Subjects: Biology; Zoology; Physiology

Publisher: New York The Macmillan company

Contributing Library: MBLWHOI Library

Digitizing Sponsor: MBLWHOI Library

Text Appearing Before Image:

120 ANIMAL BIOLOGY C. Reptiles Apparently descended from primitive Amphibians, the Reptiles met new and more favorable land conditions with progressive structural and physiological features: for example, they skipped metamorphosis and so started out from the egg with functional lungs and on four feet. So the Reptiles very soon, geologically speaking, became the dominant Vertebrates on the Earth, flourish- ing both in number of individuals and variety of species adapted

Text Appearing After Image:

Fig. 79. — Reptiles of the past. A, a Dinosaur, Branchiosaurus (length about 80 feet); B, a Pterodactyl, Rhamphorhynchus. (From Lull.) to all sorts of land and swamp conditions, and even, secondarily, to aquatic and aerial life. Probably the best known representa- tives of the extinct population of the Age of Reptiles are some of the giant Dinosaurs. (Figs. 79, 232.) Although the supremacy of the Reptiles eventually passed to the Mammals, there are still some five thousand species living to-day. These are arranged in three chief orders: the Testudinata, Crocodilia, and Squamata, represented by the Turtles and Tortoises, the Crocodiles and Alligators, and the Lizards and Snakes, respectively. 1. Turtles and Tortoises Typically encased in a shell composed of bony plates firmly fixed to the backbone and to the ribs, the Turtles and Tortoises

animal biology 1938 brachiosaurus life restorations rhamphorhynchus life restorations book illustrations medical science physiology biology zoology animals mammals zoological illustration dinosaurs paleontology amphibians vertebrates images from internet archive

1938

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