What event began to occur about 190 million years ago?

About 190 million years ago, during the Early Jurassic period, the breakup of the supercontinent Pangaea began to occur. This geological event led to the gradual formation of the Atlantic Ocean as landmasses drifted apart, significantly reshaping the Earth's continents and influencing climate and biodiversity. The process of continental drift initiated new patterns of ocean circulation and the evolution of various species in the separated land areas.