Vicious shark-tooth weapons reveal lost species
Wednesday, April 3, 2013 - 20:00
in Biology & Nature
By Stephanie Pappas, LiveScienceA collection of vicious weapons made of shark teeth reveals that two species of sharks vanished from the reefs of Kiribati before scientists even noticed the species were there.Until about 130 years ago, residents of the Gilbert Islands, which make up much of the Republic of Kiribati in the Pacific Ocean, used teeth from dusky sharks (Carcharhinus obscrus) and s...