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. Elementary biology; an introduction to the science of life . cixcuinheT Fig. 252. Genealogical tree of animal life This diagram is intended to suggest the common origin of all animal forms, with the constant progressive departure from ancestral types, now in one direction and now in another, like the branching of a tree. Of course only the main branches are shown. There are probably over a million species of animals living to-day (cf. Fig. 251)

. Elementary biology; an introduction to the science of life . cixcuinheT Fig. 252. Genealogical tree of animal life This diagram is intended to suggest the common origin of all animal forms, with the constant progressive departure from ancestral types, now in one direction and now in another, like the branching of a tree. Of course only the main branches are shown. There are probably over a million species of animals living to-day (cf. Fig. 251) Stock Photo
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The Bookworm Collection / Alamy Stock Photo

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MA76FB

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1878 x 2661 px | 15.9 x 22.5 cm | 6.3 x 8.9 inches | 300dpi

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