Steropodon was initially placed in the
crown group monotreme family
Ornithorhynchidae but was subsequently made the
type genus of Steropodontidae, its own
monotypic family. The monotreme
Teinolophos was suggested to also belong in this family, before also being placed in a distinct family.
Parvopalus, known from the same locality as
Steropodon, may be a steropodontid. == Description ==