Smelling in stereo – the real reason snakes have flicking, forked tongues

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Smelling in stereo – the real reason snakes have flicking, forked tongues: As dinosaurs lumbered through the humid cycad forests of ancient South America 180 million years ago, primeval lizards scurried, unnoticed, beneath their feet. Perhaps to avoid being trampled by their giant kin, some of these early lizards sought refuge underground.


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