Monotreme

Kollikodontidae (extinct)

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Ornithorhynchidae - Platypus

Related Topics:
Ornithorhynchidae - Platypus

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Tachyglossidae - Echidnas

Related Topics:
Tachyglossidae - Echidna

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Steropodontidae (extinct)

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Monotremes (< monos, single + trema, hole; refers to the cloaca) are mammals that are best known for laying eggs, instead of giving birth to live young like marsupials (Metatheria) and placental mammals (Eutheria). The subclass comprises a single order, Monotremata (though sometimes the subclass Prototheria is used).

Related Topics:
Cloaca - Mammal - Marsupial - Metatheria - Placental mammals - Eutheria - Prototheria

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