Steropodon is a monotreme, like the Platypus and echidnas. Unlike living monotremes, however, it had functional teeth and a powerful jaw. It may have been a semi-aquatic predator of small animals ...

Published today in the Alcheringa: An Australasian Journal of Palaeontology, evidence of an "Age of Monotremes" has been unearthed by a team of Australian scientists at the Australian Museum (AM ...