Another two genera, "Steropodon" and "Teinolophos", were originally thought to belong to Ornithorhynchidae, however they were both placed into a new family, Steropodontidae.
Another two genera, "Steropodon" and "Teinolophos", were originally thought to belong to Ornithorhynchidae. They were both placed into a new family. A new family was Steropodontidae.