Jurassic fossil pushes back origin of mammalian suckling by millions of years

A 165-million-year-old fossil of an otter-like predator from the Jurassic period suggests that key mammalian traits, including efficient food consumption and suckling, evolved earlier than previously thought. The finding is based on morphological analysis and may revise the timeline of mammalian evolution. Its significance lies in reshaping our understanding of early mammalian adaptation.

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