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Taxonavigation: Monotremata 

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Cladus: Synapsida
Cladus: Eupelycosauria
Cladus: Sphenacodontia
Cladus: Sphenacodontoidea
Cladus: Therapsida
Cladus: Theriodontia
Subordo: Cynodontia
Infraordo: Eucynodontia
Cladus: Probainognathia
Cladus: Prozostrodontia
Cladus: Mammaliaformes
Classis: Mammalia
Subclassis: Prototheria
Ordo: Monotremata

Familia: Ornithorhynchidae
Genera (1 + 4†): Ornithorhynchus – †Monotrematum – †Obdurodon – †Steropodon – †Teinolophos


  • Ornithorhynchidae Gray, 1825


  • Steropodontidae Flannery et al., 1995
    • Authority for current placement: T. Rowe et al., 2008: 1241, fig. 5 (by implication, Steropodon is placed within the clade labelled Ornithorhynchidae, consistently with the text discussion and conclusions)


  • Ann. Philos., n.s., 10: 343.
  • Flannery, T.F.; Archer, M.; Rich, T.H.; Jones, R. 1995. A new family of monotremes from the Cretaceous of Australia. Nature 377: 418–420. DOI: 10.1038/377418a0
  • Rowe, T.; Rich, T.H.; Vickers-Rich, P.; Springer, M.; Woodburne, M.O. 2008. The oldest platypus and its bearing on divergence timing of the platypus and echidna clades. PNAS 105 (4): 1238–1242. DOI: 10.1073/pnas.0706385105


Vernacular names[edit]

Deutsch: Schnabeltier
Ελληνικά: Ορνιθορρυγχίδες
español: Ornitorrincos
eesti: Nokkloomlased
日本語: カモノハシ科
македонски: Клунари
polski: Dziobakowate
русский: Утконосы
українська: Качкодзьобові
For more multimedia, look at Ornithorhynchidae on Wikimedia Commons.