Some 80 million years ago, the late Cretaceous oceans were patrolled by 17-meter mosasaurs, long-necked plesiosaurs, and ...
Some octopuses that lived over 72 million years ago were as long as whales. These huge predators may have been the largest ...
Extinct cephalopods might have been up to 19 metres in length and probably dined high up the food chain in ancient oceans.
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