Steropodon
| Steropodon Temporal range: Cenomanian | |
|---|---|
| Holotype mandible | |
| Life reconstruction of Steropodon | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Family: | †Steropodontidae |
| Genus: | †Steropodon Archer, Flannery, Ritchie, & Molnar, 1985 |
| Species: | †S. galmani |
| Binomial name | |
| †Steropodon galmani | |
Steropodon is a genus of prehistoric platypus-like monotreme, or egg-laying mammal. It contains a single species, Steropodon galmani, that lived about 100.2–96.6 million years ago during the Cretaceous period, from early to middle Cenomanian. It is one of the oldest monotremes discovered, and is one of the oldest Australian mammal discoveries. Several other monotremes are known from the Griman Creek Formation, including Dharragarra, Kollikodon, Opalios, Parvopalus, and Stirtodon.