Original: The Short-beaked Echidna is the only member of its genus, sharing the family Tachyglossidae with the extant species of the genus Zaglossus that occurs in New Guinea.
Simplified: It is the only member of the genus Tachyglossus. The Short-beaked Echidna is the only member of its genus, sharing the family Tachyglossidae with the surviving three species of the genus Zaglossus that live in New Guinea.