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From Biology-Online Dictionary | Biology-Online Dictionary
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A taxonomic group within Class Mammalia (as first proposed by Thomas Henry Huxley in 1880) comprised of metatherian mammals in which the offspring are born but are only partially developed (larval-like), and therefore need to be carried and nourished after birth in their mother's pouch or marsupium where they will undergo further development


Marsupials and opposums are members of this group. Most of the extant female marsupial species possess an abdominal pouch where the young are carried post-birth.

Word origin: Greek meta- (changed) + therion (beast)


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