Newfound crater could explain worst mass extinction
A quarter billion years ago, some 90 percent of all animal species, including the trilobites, the three-lobed predators of the sea, suddenly disappeared in the worst of all mass extinctions. The
A quarter billion years ago, some 90 percent of all animal species, including the trilobites, the three-lobed predators of the sea, suddenly disappeared in the worst of all mass extinctions. The