Monotremata

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ThreeCirclesPlain.svg Natural sientiesBiologiaEukaryotaAnimaliaChordataMammalia → Monotremata


?Monotremes
Range de fosilus: Frui Kretasi - Resente
Kurti-nasal Ekidne
Kurti-nasal Ekidne
Siential klasifikatione
Regia: Animalia
Filum: Chordata
Klase: Mammalia
(nonklasifikat) Australosphenida
Ordine: Monotremata
C.L. Bonaparte, 1837
Families

Kollikodontidae
Ornithorhynchidae
Tachyglossidae
Steropodontidae

Monotremes (fro li greki vorde monos 'singli' + trema 'true', referant al kloaka) es mamiferes kel partura oves insted naskiso vivanti yunes kom marsupiales (Metatheria) e plasental mamiferes (Eutheria).