Monotremes are mammals that lay eggs and do not carry their young in a womb. They include species like the platypus and echidnas. Egg-laying monotremes may have retained certain traits from their ...

Six monotremes living in the same place at the same time, 100 million years ago at Lightning Ridge, NSW. Clockwise from lower left: Opalios splendens, a newly described species dubbed an ‘echidnapus’; ...

A nearly gapless genome sequence of the echidna, an egg-laying mammal with multiple sex chromosomes, helps researchers to track genomic reorganization events that gave rise to a highly unusual sex ...

New analysis of a 100-million-year-old fossil embedded in a rocky cove in Australia suggests echidnas may have evolved from swimming ancestors. That's basically unheard of: While there are many ...

Attenborough’s long-beaked echidna, which was thought to be extinct, has stunned scientists after being filmed in a tropical forest in Indonesia for the first time. The egg-laying mammal, named after ...

With spines like a hedgehog, feet like a mole and snout like an anteater, this bizarre-looking animal is hard to miss. But that’s exactly what it has been excelling at for more than half a century, ...

More than 60 years after it was last recorded, an expedition team has rediscovered an iconic, egg-laying mammal in one of the most unexplored regions of the world. Attenborough's long-beaked echidna, ...

Linda Shearwin receives funding from the Australian Research Council. Frank Grützner does not work for, consult, own shares in or receive funding from any company or organization that would benefit ...

(via SciShow) Look, we all think platypuses are weird. Just one look at these beaver-tailed, egg-laying, duck-billed weirdos makes you wonder how we're even both mammals. But I have news for you - ...