Posts Tagged ‘Birgeria americana’

WFS News: Birgeria americana,Large-mouthed fish was top predator after mass extinction

@WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev The most catastrophic mass extinction on Earth took place about 252 million years ago — at the boundary between the Permian and Triassic geological periods. Up to 90 percent of the marine species of that time were annihilated. Worldwide biodiversity then recovered in several phases throughout a period […]