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Raamatud Books 1 - 2 of 2 on ... the north, with which they therefore have a true genetic relation; while any....
" ... the north, with which they therefore have a true genetic relation; while any intercommunion between themselves has been comparatively recent and superficial, and has in no way modified the great features of animal life in each. The east and west division,... "
The Geographical Distribution of Animals: With a Study of the Relations of ... - Page 145
by Alfred Russel Wallace - 1876
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The American Naturalist

1877
...features of animal life in each. The east and west division represents — according to our views — a more fundamental diversity, since we find the northern...this division, taken by itself, would obscure the facts, firstly, of the close relation and parallelism of the Nearctic and Palaearctic regions, not...
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The Geographical Distribution of Animals: With a Study of the ..., 2. köide

Alfred Russel Wallace - 1876
...features of animal life in each. The east and west division, represents — according to our views — a more fundamental diversity ; since we find the northern continent itself so divided iii the earliest Eocene, and even in Cretaceous times ; while we have the strongest proof that South...
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