Well nobody does really know yet when that "period of time" was if it even happened.
The era that ended with Earth covered in massive deserts was the Permian period, specifically during the Permian-Triassic extinction event around 252 million years ago. This mass extinction event wiped out nearly 96% of marine species and 70% of terrestrial vertebrate species, leading to widespread desertification of the planet.
The Mesozoic era ended with a massive impact caused by an asteroid hitting Earth, leading to the extinction of the dinosaurs.
Massive Magazine ended in 1999.
Massive Development ended in 2005.
Massive - TV series - ended on 2008-10-12.
Here is one: A massive comet or asteroid appears to have ended the dinosaurs lives.
The Devonian time period ended because of a mass extinction of several species of fish, amphibians and other types of reptiles.
ordering a massive airlift
A huge head ended with a massive horn curved upwards.
When the ice age ended, the land once covered with ice was covered with newly exposed land and water from melting ice sheets. This led to the formation of new landscapes and ecosystems as vegetation began to grow in the previously glaciated areas.
Barren with few trees
When the ice age ended, the land that was once covered in ice was now covered in vegetation and water. This led to the formation of lakes, rivers, and forests as the glaciers retreated. The land also became suitable for habitation by various species of plants and animals.