Stirtodon
| Stirtodon Temporal range: Late Cretaceous (Cenomanian),  | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Class: | Mammalia | 
| Family: | †Teinolophidae (?) | 
| Genus: | †Stirtodon | 
| Species: | †S. elizabethae | 
| Binomial name | |
| †Stirtodon elizabethae Flannery et al., 2020 | |
Stirtodon is an extinct genus of monotreme mammal from the Late Cretaceous (Cenomanian) Griman Creek Formation of Australia. The genus contains a single species, S. elizabethae, known from a large isolated premolar. Stirtodon may be the largest toothed monotreme discovered. Several other monotremes are known from the Griman Creek Formation, including Dharragarra, Kollikodon, Opalios, Parvopalus, and Steropodon.