Principles of Zoology [touching the Structure, Development, Distribution, And Natural Arrangement of the Races of Animals, Living And Extinct; With Numerous Illustrations
Principles of Zoology [touching the Structure, Development, Distribution, And Natural Arrangement of the Races of Animals, Living And Extinct; With Numerous Illustrations
Louis Agassiz
The book Principles of Zoology [touching the Structure, Development, Distribution, And Natural Arrangement of the Races of Animals, Living And Extinct; With Numerous Illustrations was written by author Louis Agassiz Here you can read free online of Principles of Zoology [touching the Structure, Development, Distribution, And Natural Arrangement of the Races of Animals, Living And Extinct; With Numerous Illustrations book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Principles of Zoology [touching the Structure, Development, Distribution, And Natural Arrangement of the Races of Animals, Living And Extinct; With Numerous Illustrations a good or bad book?
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But there are other reasons which induce us to unite the carboniferous period with the secondary age, especially when considering that here the land animals first appear, whereas, in the Palseozoic age, there are only marine animals, breathing by gills ; and, also, that a luxuriant terrestrial yegetation was developed at that epoch. Digit zed by Google AGES OF NATURE. 229 with a great number of birds' tracks (Fig. 158, a, h) belong- ing to this epoch, for the most part indicating birds of gigan...- tic size. These impressions, which he has designated under the name of OmithichniteSy are some of them eighteen inches ^^ "K^^A a Fig, 158. in length, and five feet apart, far exceeding' in size the tracks of the largest ostrich. Other tracks, of a very peculiar shape, have been found in the red sandstone of Germany, and in Pennsylvania. They were probably made by Reptiles which have been called Cheirotherium^ from the resemblance of the track to a hand, (c.) The MoUusks, Articulates, and Radiates of this period, approach to the fauna of the succeeding period.
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