Extinct animals

Definition and stakes

Portrait of Thomas Henry Huxley Thomas Henry Huxley,  The Past Condition of Organic Nature

“ That is to say, how many of these orders of animals have lived at a former period of the world's history, but have at present no representatives? That is the sense in which I meant to use the word "extinct." I mean that those animals did live on this earth at one time, but have left no one of their kind with us at the present moment. So that estimating the number of extinct animals is a sort of way of comparing the past creation as a whole with the present as a whole. Among the mammalia and birds there are none extinct ”
Source: Gutenberg

Joseph A. Hester,  Early Man in the New World

“ Romer and Edwin H. Colbert have put forward another explanation for the extinction of the mammals. They suggest that the advent of man in the New World may have upset a nicely balanced state of nature. [31] But man had been living with just such animals in the Old World for hundreds of thousands of years before they became extinct. What, then, destroyed the mammoth in Europe?
The most pulling of all the fossils of extinct animals are those in the deep Alaska muck beds. Their numbers are appalling. They lie frozen in tangled masses, interspersed with uprooted trees.
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Source: Gutenberg

H. N. Hutchinson,  Extinct Monsters

“ It was thought in those days that whatever animals lived in the past must have resembled those now inhabiting the world, and the idea of extinct types unknown to man, and unknown to the regions where their bones were found embedded below the soil, was of so novel and startling a character as to appear incredible. ”
Source: Gutenberg

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