
Ancient sharks were giants before reptiles appeared.
A new study has revealed that giant sharks emerged and took on the role of top marine predators much earlier than previously thought, successfully competing with ancient marine reptiles.
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AILINCOM 
A new study has revealed that giant sharks emerged and took on the role of top marine predators much earlier than previously thought, successfully competing with ancient marine reptiles.

Long before the appearance of bright colors and fragrances, plants attracted insects using heat signals. A new study has shown that ancient cycads used infrared radiation to communicate with their pollinators.