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Fragments of an ancient continent are buried beneath the floor of the Indian Ocean, a study suggests, according to BBC. 

Researchers have found evidence for a landmass that would have existed between 2,000 and 85 million years ago.

The strip of land, which scientists have called Mauritia, eventually fragmented and vanished beneath the waves as the modern world started to take shape.

The study is published in the journal Nature Geoscience.

Until about 750 million years ago, the Earth's landmass was gathered into a vast single continent called Rodinia.

And although they are now separated by thousands of kilometres of ocean, India was once located next to Madagascar.

Now researchers believe they have found evidence of a sliver of continent - known as a microcontinent - that was once tucked between the two.

The team came to this conclusion after studying grains of sand from the beaches of Mauritius.

While the grains dated back to a volcanic eruption that happened about nine million years ago, they contained minerals that were much older.

Professor Trond Torsvik, from the University of Oslo, Norway, said: "We found zircons that we extracted from the beach sands, and these are something you typically find in a continental crust. They are very old in age."

The zircon dated to between 1,970 and 600 million years ago, and the team concluded that they were remnants of ancient land that had been dragged up to the surface of the island during a volcanic eruption.