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  2. Monotreme - Wikipedia

    en.wikipedia.org/wiki/Monotreme

    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. Monotremes are typified by structural differences in their brains, jaws, digestive tract ...

  3. List of monotremes and marsupials - Wikipedia

    en.wikipedia.org/wiki/List_of_monotremes_and...

    The class Mammalia is divided into two subclasses based on reproductive techniques: egg-laying mammals (yinotherians or monotremes - see also Australosphenida), and mammals which give live birth . The latter subclass is divided into two infraclasses: pouched mammals ( metatherians or marsupials ), and placental mammals ( eutherians , for which ...

  4. Category:Monotremes - Wikipedia

    en.wikipedia.org/wiki/Category:Monotremes

    This category contains articles about all taxa below the subclass/order Monotremata - the platypus, the echidnas, and extinct species which are only known via fossil evidence. Subcategories This category has the following 5 subcategories, out of 5 total.

  5. Ornithorhynchoidea - Wikipedia

    en.wikipedia.org/wiki/Ornithorhynchoidea

    Ornithorhynchoidea is a superfamily of mammals containing the only living monotremes, the platypus and the echidnas, as well as their closest fossil relatives, to the exclusion of more primitive fossil monotremes of uncertain affinity.

  6. Platypus - Wikipedia

    en.wikipedia.org/wiki/Platypus

    Together with the four species of echidna, it is one of the five extant species of monotremes, mammals that lay eggs instead of giving birth to live young. [6] Like other monotremes, the platypus has a sense of electrolocation , which it uses to detect prey in cloudy water. [ 7 ]

  7. List of placental mammals - Wikipedia

    en.wikipedia.org/wiki/List_of_placental_mammals

    The class Mammalia is divided into two subclasses based on reproductive techniques: monotremes, which lay eggs, and therians, mammals which give live birth, which has two infraclasses: marsupials/metatherians and placentals/eutherians. See List of monotremes and marsupials, and for the clades and families, see Mammal classification ...

  8. Australosphenida - Wikipedia

    en.wikipedia.org/wiki/Australosphenida

    Monotremes were historically classified within the clade Prototheria, alongside morganucodontids, docodonts, triconodonts and multituberculates, however it is now widely recognised that this grouping is a paraphyletic grade and that these groups do not share a close relationship. In 2001, Luo et al proposed the clade Australosphenida to include ...

  9. List of monotremes and marsupials of Australia - Wikipedia

    en.wikipedia.org/wiki/List_of_monotremes_and...

    Australia is home to two of the five extant species of monotremes and the majority of the world's marsupials (the remainder are from Papua New Guinea, eastern Indonesia and the Americas). The taxonomy is somewhat fluid; this list generally follows Menkhorst and Knight [ 1 ] and Van Dyck and Strahan, [ 2 ] with some input from the global list ...