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Raamatud Books 1 - 6 of 6 on But, though the original or common type has never been departed from in essentials,....
" But, though the original or common type has never been departed from in essentials, variation has been very active among them within certain limits, and the great difficulty which all zoologists have felt in subdividing them into natural minor groups... "
Land Mammals in the Western Hemisphere - Page 411
by William Berryman Scott - 1913 - 693 lehte
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The Shipley collection of scientific papers, 33. köide

1890
...Fiirbringer. Turning finally to the Mammalia, we find Sir William Flower writing thus of the Ruminants : — " The great difficulty which all zoologists have felt...skull frontal appendages, teeth, cutaneous glands, &c.) have proceeded with such apparent irregularity and absence of correlation, that the different...
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Annual Report, 14. köide

Indiana. Department of Geology and Natural History - 1884
...been departed from in essentials, variation has been very active among them within certain limits, and the great difficulty which all zoologists have felt...variously combined in different members of the group. It appears, however, extremely probable that they soon branched into two main types, represented in...
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Report, 14. köide

Indiana. Dept. of Geology and Natural Resources - 1884 - 8 lehte
...been departed from in cxientials, variation has been very active among them within certain limits, and the great difficulty which all zoologists have felt...subdividing them into natural minor groups arises from the (act that the changes in different organs (feet, skull, frontal appendages, teeth, cutaneous glands,...
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An Introduction to the Study of Mammals Living and Extinct

William Henry Flower, Richard Lydekker - 1891 - 763 lehte
...departed from in essentials, variation has been very active among them within certain limits ; and the great difficulty which all zoologists have felt...irregularity and absence of correlation that the different modificai Foi the anatomy of this group see AH Garrod, Proc. Zwl. f-oc. 1f77, p. 2. tioris of these...
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Natural Science: A Monthly Review of Scientific Progress, 10. köide

1897
...Fiirbringer. Turning finally to the Mammalia, we find Sir William Flower writing thus of the Ruminants : — " The great difficulty which all zoologists have felt...skull frontal appendages, teeth, cutaneous glands, &c.) have proceeded with such apparent irregularity and absence of correlation, that the different...
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The Proceedings of the Scientific Meetings of the Zoological Society of London

1875
...subdividing them into natural groups (the "despair of zoologists," as Pucheran calls it) arises from the tact that the changes in different organs (feet, skull, frontal appendages, teeth, cutaneous glands, &c.) have proceeded with such apparent irregularity and absence of correlation that the different modifications...
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