...Among the mammals the curious marsupials,of which our southern opossum is an example,furnish good illustrations of this general truth... 
Clarence M. Weed 「Butterflies Worth Knowing」
...Further, marsupials, except fortwo kinds found in America, are confined to this long-isolatedsouthern land...
John Albert Leach 「An Australian Bird Book」
..., and the whole structure of these organs in the larger andthe finer scale, agree so closely with those of the other mammals (such as theapes, rodents, ungulates, cetacea, marsupials, etc...
Ernst Haeckel 「The Evolution of Man」
...Gastrulation is still more modified and curtailed cenogenetically in theplacentals than in the marsupials...
Ernst Haeckel 「The Evolution of Man」
...Their nearest descendants, the marsupials,formed the habit of retaining the eggs, and developing them in theoviduct; the latter was thus converted into a womb (uterus)...
Ernst Haeckel 「The Evolution of Man」
...The corpuscallosum, which forms a sort of wide bridge connecting the two hemispheresof the cerebrum, is only fully formed in the Placentals; it is very rudimentaryin the Marsupials and Monotremes...
Ernst Haeckel 「The Evolution of Man」
...The Placentals arealso generally without the hook-shaped process at the angle of the lower jawwhich is found in the Marsupials...
Ernst Haeckel 「The Evolution of Man」
...Someare closely related to the Marsupials (especially the opossum)...
Ernst Haeckel 「The Evolution of Man」
...But in the Marsupials acommunication is opened between the two Müllerian ducts, and in the Placentalsthey combine below with the rudimentary Wolffian ducts to form a single“genital cord...
Ernst Haeckel 「The Evolution of Man」
...Even before this partition has been formed in the Marsupials and Placentals, wesee the first trace of the external sexual organs...
Ernst Haeckel 「The Evolution of Man」
...Lowans and other desert birds and marsupials appear never to approachthe watering-places...
Ernest Giles 「Australia Twice Traversed, The Romance of Exploration」
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