Another two genera, Steropodon and Teinolophos, may also belong to Ornithorhynchidae. However, they are both very ancient, and scientific literature seems to indicate they are closely related to, but not a part of, the Ornithorhynchids. The extinct Ornithorhynchus maximus was once included in Ornithorhynchus, but has now been concluded to be from ...
Ornithorhynchidae is the duck-billed platypus family of mammals consisting of a single genus and species.
[n] - platypus
family Ornithorhynchidae noun platypus