Assertion: echidna | /r/PartOf | mammalian order
Facets:
value: with the platypus
type: OTHER
value: monotremata, a unique group
type: OTHER
Source sentences:
text: Similar electroreceptors are also present in echidnas, which, together with the platypus, make up the mammalian order Monotremata, a unique group with an exceptionally ancient history.