Australian scientists solve mystery of moment monotremes migrated
by Donna Lu from on (#5XHQT)
Fossil analysis is shedding new light on the origins of egg-laying mammals and their arrival on the continent
Researchers have pinpointed exactly how and when echidnas likely arrived in Australia as part of a fossil analysis shedding new light on the origins of egg-laying mammals.
The platypus and four species of echidna are the only remaining living monotremes - mammals that lay eggs instead of giving birth to live young. New analysis of every monotreme fossil discovered to date has recast the earliest history of the animals.
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