In the 1970s, scientists wanted to know if there were any supercontinents before Pangu continent (as shown). Today, we know at least two, researchers are exploring the possible supercontinents that will emerge next.
What was before Pangu?
The continent we know was formed when the primitive continent Pangu continent split, and its fragments reached their present location after a long and slow journey. This process took about 200 million years. But the Earth's crust is estimated to be 4.5 billion years old…[Scientists are exploring] the puzzled problems that have occurred in the billions of years before the collapse of the Pangu continent.
Fossil and rock evidence shows that there is an intermittent relationship between the two continents, which has existed long before Pangu continent. Most scientists agree that the earliest known supercontinent, known as Nuna, was formed about 1.5 billion years ago. About 1 billion years ago it split and reunified into supercontinental Rodinia . A third supercontinent called Pannotia may have formed around the Antarctic about 600 million years ago, but its existence is controversial. Today, scientists are predicting how the continents will merge in the future. As the continent drifts to the Arctic, the supercontinent known as Amasia may form
in 250 million years.