A new study suggests the platypus and echidna — the only egg-laying mammals — had a water-dwelling ancestor. The finding ...

The platypus and echidna, often regarded as some of the most peculiar animals on Earth, may be hiding a far more complex ...

The new research could upend what’s known of the evolution of the most primitive mammals alive today. Found in Australia and New Guinea, the platypus and echidna are called monotremes ...

with the ancestors of platypuses then venturing into the water. Both animals are monotremes, the only living mammals that lay eggs rather than giving birth to live young. To shed more light on echidna ...

New analysis of a 100-million-year-old fossil embedded in a rocky cove in Australia suggests echidnas may have evolved from ...

University of New South Wales. "'Extremely rare event': bone analysis suggests ancient echidnas lived in water." ScienceDaily. ScienceDaily, 28 April 2025. <www.sciencedaily.com / releases / 2025 / 04 ...