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| | marsupial. The Columbia Encyclopedia, Sixth Edition. 2001-05 (Site not responding. Last check: 2007-10-22) |
 | | They are generally distinguished from the higher, or placental, mammals by the absence of a placenta connecting the embryo with its mother, although in a few forms the female has a rudimentary placenta that functions for a short time. |
 | | In nearly all marsupials the females nipples are covered by a pouch, or marsupium, formed by a fold of abdominal skin. |
 | | Thus, there are animals known as Tasmanian wolves (see thylacine), marsupial moles, marsupial mice, and native cats (see dasyure), which live very much like the correspondingly named placental mammals and, in many cases, are strikingly similar in appearance. |
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