Both the start and end of the period are marked by major extinction events.

We'll be studying past extinction events right up through the end of the next current one.

The effect of these differences is most profoundly seen during extinction events.

The average time interval between extinction events was determined as 26 million years.

How extraordinary to be living at a time when one of the earth's major mass extinction events occurs.

We discussed the power law distribution of extinction events in the biological record.

Cyanobacteria were therefore responsible for one of the most significant extinction events in Earth's history.

Chlorobium species are thought to have played an important part in mass extinction events on Earth.

The Mesozoic era began and ended with huge extinction events.

Best guess; Higher than average, but much lower than the "big five" extinction events.

Both the climate changes and sudden impacts may cause, or contribute to, extinction events.

They began to find evidence of power law distributions of such extinction events.

On Earth, there have been numerous major extinction events that destroyed the majority of complex species alive at the time.

The ammonoids as a group continued through several major extinction events, although often only a few species survived.

The Triassic had several more extinction events, whose causes are also obscure.

After all, extinction events on Earth led to increased biodiversity in the communities that derived from their survivors.

Although extinction events happen very rarely, large projectiles can do severe damage.

There have also been several extinction events coupled with the past changes in climate you are referencing.

Because so much biodiversity was lost, the recovery of life on earth took much longer than after other extinction events.

It would be a pretty big event, but it isn't near the size we estimate previous extinction events were.

Communities tend to fill up and do exhibit small and large local extinction events.

Discover more about Earth's major extinction events below.

The first tetrapods appear in the fossil record over a period, the beginning and end of which are marked with extinction events.

The next 400 million years included repeated, massive biodiversity losses classified as mass extinction events.

Many scientists think asteroids striking the Earth killed off all the dinosaurs and caused some of the other extinction events.