Dinosaurs

235 million years
or 57 meters to today

Geolo­gi­cal era: Meso­zoic / Trias­sic

Some of the amphi­bi­ans are deve­lo­ping into repti­les better adap­ted to life on the land. These include early dino­saurs. Massive volca­nic erup­ti­ons caused the fifth mass extinc­tion 200 million years ago. This cata­stro­phe clai­med 50% of all aqua­tic orga­nisms and 30% of land-living orga­nisms. As a result, dino­saurs conquer the planet.

The climate is hot and dry. Deserts and arid plains charac­te­rize the centre of the super­con­ti­nent Pangaea, to the north and south there are exten­sive forest areas. The poles are ice-free. At the end of the Trias­sic, Pangaea begins to break apart.

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