31. Around 190 million years ago, Gondwana and Laurasia split apart due to the widening of the Atlantic Ocean. 32. Towards the end of the Paleozoic radiolarites formed also along the southern margin of Laurasia near Mashad in Iran. 33. The northern supercontinent of Laurasia began to break up, as Europe, Greenland and North America drifted apart. 34. Laurasia was formed from the joining of Laurentia with Gondwana and two smaller continents which had broken off Rodinia.35. The Pangaea was a supercontinent until it split into two continents about 200 million years ago _ Laurasia and Gondwanaland. 36. These, in turn, are in Laurasiatheria, a superorder that had its origin in the extinct continent Laurasia . 37. Collision between Gondwana and Laurasia to form Pangea occurred in a relatively brief interval, about 50 million years long. 38. It eventually slammed into the northern land mass, Laurasia , and formed the gigantic folded mountains of the Himalaya. 39. The Cimmeria continent rifted away from Gondwana and drifted north to Laurasia , causing the Paleo-Tethys to shrink. 40. Eventually, the air mass would reach the coast of Laurasia and surface convergence resulted in immense amounts of precipitation.
