The "echidnapus", bottom left, is among six monotreme species discovered at Lightning Ridge opal fields Scientists have discovered a bizarre creature dubbed the "echidnapus" which they believe roamed ...

Outliers among mammals, monotremes lay eggs instead of giving birth to live young. Only two types of monotremes, the platypus and echidna, still exist, but more monotreme species were around about 100 ...

Platypuses easily win the title of weirdest mammal. These crazy-looking critters have the ability to shoot deadly venom from their feet, and they lay eggs rather than give birth to live young. So it ...

The genomes of egg-laying monotreme mammals, platypus and echidna, have been published in the prestigious journal Nature, providing a valuable public resource for research in mammalian biology and ...