Another mass extinction at the end of this period saw 80 per cent of species disappear from earth.

This time corresponds approximately to a minor extinction event when around 40% of species disappeared.

Many animal and plant species disappeared, as did the population of breeding birds on the pasture land.

The changes to the fauna were even more dramatic: the megafauna, species significantly larger than humans, disappeared, and many of the smaller species disappeared too.

Where wetlands remain, but are degraded, this species disappears.