Monotremata

Natural sienties → Biologia → Eukaryota → Animalia → Chordata → Mammalia → Monotremata

?Monotremes Range de fosilus: Frui Kretasi - Resente
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).