The mammalian fauna of Australia is distinctive. Only on the continental island of Australia and the smaller island of New Guinea do representatives occur of all three extant major groups of mammals.

The egg-laying monotremes have played a central role in our understanding of mammalian evolution, but their fossil record is poor and their evolutionary history is controversial. Living monotremes are ...

Adult males measure 15.7 to 24.8 inches long from the tip of their bill to the tip of their tail and weigh 1.7 to 6.6 pounds. Females are smaller than males, measuring 14.5 to 21.6 inches in ...

Our editorial process produces two outputs: (i) public reviews designed to be posted alongside the preprint for the benefit of readers; (ii) feedback on the manuscript for the authors, including ...

The future of the platypus, a unique duck-billed, egg-laying mammal only found in Australia, is under threat because they cannot climb over tall river dams, according to a new study.

being the only living species of the Ornithorhynchidae family and one of only five extant species of monotremes. The platypus lineage is estimated to have originated about 120 million years ago.