Smithsonian Magazine on MSN
Sharklike Fish With Weird, Buzz-Saw Jaws Sliced Through the Seas, Then Vanished. Now, Paleontologists Are Unraveling Their Secrets
These "total monsters of fishes" are extinct today, though new clues about their lives come from CT scans and their closest ...
A massive ice age wiped out ocean life 445 million years ago, reshaping ecosystems and setting the stage for jawed fish ...
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