What was the name of fossil that found in Africa south America Australia India and Antarctica?

The fossil you are referring to is called Mesosaurus. It was a small reptile that lived approximately 250 million years ago during the Permian period. Mesosaurus fossils have been found in South Africa, South America, Australia, India, and Antarctica. The presence of Mesosaurus fossils on different continents supports the theory of continental drift, which suggests that the continents were once joined together in a single landmass called Pangea. As Pangea broke apart, the Mesosaurus populations became separated, leading to their eventual extinction.