Instead, the team hypothesized a stellar explosion may have been a potential factor in the Late Devonian extinction event 372 million years ago and one at the end of the Late Ordovician 445 ...

Among these are the late Devonian extinction, 372 million years ago, and the late Ordovician extinctions, around 445 million years ago.

Instead, the team hypothesized a stellar explosion may have been a potential factor in the Late Devonian extinction event 372 million years ago and one at the end of the Late Ordovician 445 ...

Unexplained mass extinctions on Earth In the study, the researchers provided no evidence that a supernova caused mass extinctions. Instead, the team hypothesized a stellar explosion may have been a ...