Rather than being a rapid extermination, the extinction may have been a more drawn-out transition. “In our interpretation,” Fanti says, “the end-Jurassic event was global in its effects but was mostly likely a complex sequence of local biological crises that are still poorly documented.”

if there was a mass extinction, it didn’t kill off life planetwide

Paleontologists have long debated whether or not there was a mass extinction at the end of the Jurassic period, 145 million years ago. The group that includes Machimosaurus, called the teleosaurids, is among those thought to have died out.

Table of Contents IntroductionThe Quaternary environmentGlaciationSea-level changesPaleoclimate

The most distinctive changes seen during the Quaternary were the advances of ice into temperate latitudes of the Northern Hemisphere.

The glacial landscapes were dominated by ice several kilometres thick that covered all but the highest peaks in the interior.