Did plants cause one of Earth’s great extinctions?

Did plants cause one of Earth’s great extinctions?

Clues are hard to come by when you’re trying to look back to a time when the continents clumped together like a closed fist. But geologists have found evidence that plants, the most gentle of organisms, may have helped kill most of the life in the oceans 374 million years ago.

Source: juneauempire.com