The fifth, the end-Cretaceous event, which occurred sixty-five million years ago, exterminated not just the dinosaurs but seventy-five per cent of all species on earth.

NEWYORKER: The Sixth Extinction?

When people began to believe the impact theory, they started looking for other Cretaceous-end anomalies.

ECONOMIST: The rise of the dinosaurs

The question is one of the most hotly contested in palaeontology and revolves around an apparent gap in the fossil record immediately prior to the K-T boundary - the distinct layer of geological sediments separating the Cretaceous and Tertiary periods, and associated with a massive asteroid impact and global extinction event.

BBC: Closing the 'three metre gap'

The fossils ranged from small Eocene swimmers imprinted on rock to the remains of late-Cretaceous dinosaurs.

NEWYORKER: Bones of Contention

But, at about six hectares (15 acres), it already looks like the most important late-Cretaceous fossil bed in the world.

ECONOMIST: Dinosaurs

These devices are akin to the mammals of the late Cretaceous, ready to dominate the post-dinosaur world.

FORBES: Microsoft Paradox: Can Windows Be Everywhere and Nowhere at the Same Time?

Dinosaur-bearing Jurassic and Cretaceous rocks as well as tropical tower karst can be found here.

UNESCO: MEDIA SERVICES

Low-cost, underpowered notebooks that were all the rage up until mid-2010, when Apple introduced the iPad and as with the great Cretaceous meteor and the dinosaurs wiped them out in one blow.

FORBES: Chromebooks Are Taking Off