"Shark-tooth weapons once used for warfare in the Central Pacific suggest that two extinct shark species used to populate the area, a new study says.
Joshua Drew from Columbia University in New York and colleagues from the Field Museum in Chicago scoured natural history museums for the spiky swords, as well as clubs, daggers, lances and spears. The teeth lashed to this sword with coconut fibers and human hair offer evidence of past ecosystems, before written records….”
“‘Had we never done this work, nobody would have ever known that these things ever existed there. It had been erased from our collective memories that these sharks once plied these waters,’ said Drew.
'I just wanted to do something cool and different,' said Drew, now at Columbia University. 'I just wanted to go down and look at really cool stuff. We were just going to see what was there.'”