Difference between revisions of "Monotreme"
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Jeremiah4-22 (Talk | contribs) (New page: '''Monotremes''' are a small relict group of primitive Australasian mammals, consisting of the duck-billed platypus and the several echidnas. In addition to their unusual phys...) |
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| − | '''Monotremes''' are a small [[relict]] group of primitive | + | '''Monotremes''' are a small [[relict]] group of primitive [[Australasia]]n mammals, consisting of the duck-billed [[platypus]] and the several [[echidna]]s. |
In addition to their unusual physical conformations, Monotremes are remarkable for being the only mammals to lay eggs, and to have poison glands (spurs on the back legs of the male platypus); these were an unpleasant surprise for several early zoologists. Another primitive feature is the absence of well-developed [[mammary gland]]s, the young platypi and echidnae being nourished by nutritious emissions from their mothers unmodified [[sweat gland]]s. | In addition to their unusual physical conformations, Monotremes are remarkable for being the only mammals to lay eggs, and to have poison glands (spurs on the back legs of the male platypus); these were an unpleasant surprise for several early zoologists. Another primitive feature is the absence of well-developed [[mammary gland]]s, the young platypi and echidnae being nourished by nutritious emissions from their mothers unmodified [[sweat gland]]s. | ||
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Revision as of 12:45, March 24, 2007
Monotremes are a small relict group of primitive Australasian mammals, consisting of the duck-billed platypus and the several echidnas.
In addition to their unusual physical conformations, Monotremes are remarkable for being the only mammals to lay eggs, and to have poison glands (spurs on the back legs of the male platypus); these were an unpleasant surprise for several early zoologists. Another primitive feature is the absence of well-developed mammary glands, the young platypi and echidnae being nourished by nutritious emissions from their mothers unmodified sweat glands.
