Order Monotremata Bonaparte 1838 (monotreme)
PaleoDB taxon number: 39737
Alternative spelling: Monotremati
Parent taxon: Australosphenida according to Z.-X. Luo et al. 2001
Sister taxa: Ambondro, Ausktribosphenida, Ausktribosphenos, Bishops, Henosferidae
Subtaxa: Agathodonta, Cacodonta, Kollikodontidae, Kryoryctes, Ornithorhynchidae, Platypoda, Spondilocoelia, Steropodontidae, Tachyglossa, Tachyglossidae
Ecology: scansorial insectivore