Steropodon

Steropodon is a genus of prehistoric platypus-like monotreme, or egg-laying mammal. It contains a single species, Steropodon galmani, that lived about 105 to 93.3 million years ago (mya) 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.

Steropodon
Temporal range:
Holotype mandible
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Monotremata
Family: Steropodontidae
Genus: Steropodon
Archer, Flannery, Ritchie, & Molnar, 1985
Species:
S. galmani
Binomial name
Steropodon galmani
Archer, Flannery, Ritchie, & Molnar, 1985
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