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9 lip 2024 · What are monotremes. How many are there and how do they differ from other mammals. Do they have mammary glands. Also, learn their reproduction with images.
Monotreme, any member of the egg-laying mammalian order Monotremata, which includes the amphibious platypus and the terrestrial echidnas of continental Australia, the Australian island state of Tasmania, and the island of New Guinea. It is the most ancient living order of mammals.
1 sie 2017 · Basal egg-laying mammals are called monotremes. Unlike marsupial and placental animals, these mammals do not give birth to live young ones. All of the surviving members of the monotreme group are indigenous to the island of New Guinea and Australia.
Monotremes (/ ˈ m ɒ n ə t r iː m z /) are mammals of the order Monotremata. They are the only group of living mammals that lay eggs , rather than bearing live young. The extant monotreme species are the platypus and the four species of echidnas .
The echidna and the duck-billed platypus, which are the only egg-laying mammals, are so distinct that they are assigned to a discrete subclass, the Prototheria, which includes the order Monotremata, separate from the more familiar and well-studied placental mammals.
These animals make up the scientific order Monotremata, the most ancient living order of mammals. There are only two kinds of monotreme that survive today: the platypus, which is native to Australia, and the echidnas, found in Australia, New Guinea, and nearby islands.
Monotremes: meet nature’s oddballs that bridge the evolutionary gap ...
