The Cretaceous period is the third and the final Mesozoic Era period, lasting from 145 to 65 million years ago for about 80 million years.
Emerging flowering plants enhanced the growing pollinating insect population such as bee and butterfly species. . Plants evolved rapidly and the dinosaur world reached its diversity peak exactly during the Cretaceous period.
The ancient continents continued to keep splitting forming the known ones. When North Laurasia and South Gondwana fell apart, Eurasia and North America were shaped first, later South America, Africa, India, and Australia. . The Atlantic Ocean was getting bigger and the climate turned a bit cooler. The poles started to experience snowfalls.This allowed the great diversification of the flora and fauna to evolve in different parts of the world.
Unfortunately, the Jurassic giant Diplodocus and Stegosaurus disappeared and were replaced by emerging Triceratops, Ankylosaurus, and Iguanodons.
The largest airborne creatures Archaeopteryx and Quetzalcoatl emerged during the Cretaceous period as well. Terror-sours got bird contenders ready to take the place of flying reptiles. Since that time reptiles and birds had to coexist. First lizards and snakes also showed up. Huge 17-metre mosasaurs roamed the oceans alongside with many more known turtles.