It wasn’t an ancient boomerang. It was, in fact, a fish — albeit unlike any known today. Beyond that, nobody’s quite sure what to make of Pegasus volans.
The fish’s ribbonlike body, known from two fossils from a 50-million-year-old site in northern Italy, has thwarted efforts to pinpoint the animal’s place on the tree of life for more than two centuries. In a new analysis posted August 23 on bioRxiv.org, a pair of researchers says even the most prominent ideas so far are incorrect — enough so to rename the extinct animal.
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