. The age of mammals in Europe, Asia and North America. Mammals, Fossil; Paleontology. 178 THE AGE OF MAMMALS IV. LOWER OLIGOCENE, FOURTH FAUNAL PHASE—THE SECOND MODERNIZATION. SUDDEN APPEARANCE IN EUROPE AND . NORTH AMERICA OF NUMEROUS EXISTING FAMILIES OF MAMMALS. REUNION OF THE NEW AND OLD WORLD INTO A SINGLE ZOOLOGICAL REGION, FOLLOWED BY ANOTHER LONG PERIOD OF INDEPENDENT EVOLUTION AND PARTIAL EXTINCTION. The first impression of this phase is our sudden introduction to a large number of modernized types which had been slowly evolving elsewhere, probably in the plains of America and Eurasi
. The age of mammals in Europe, Asia and North America. Mammals, Fossil; Paleontology. 178 THE AGE OF MAMMALS IV. LOWER OLIGOCENE, FOURTH FAUNAL PHASE—THE SECOND MODERNIZATION. SUDDEN APPEARANCE IN EUROPE AND . NORTH AMERICA OF NUMEROUS EXISTING FAMILIES OF MAMMALS. REUNION OF THE NEW AND OLD WORLD INTO A SINGLE ZOOLOGICAL REGION, FOLLOWED BY ANOTHER LONG PERIOD OF INDEPENDENT EVOLUTION AND PARTIAL EXTINCTION. The first impression of this phase is our sudden introduction to a large number of modernized types which had been slowly evolving elsewhere, probably in the plains of America and Eurasia. In North America this second modernization is shown to be still more remarkable than the first. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Osborn, Henry Fairfield, 1857-1935. New York, The Macmillan Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectpaleontology, bookyea
