Here's why:
* Unique Location: Mesosaurus fossils have been found only in South America and Africa. These are continents that are now separated by a vast ocean.
* Aquatic Reptile: Mesosaurus was a freshwater reptile, unable to swim long distances in saltwater. This makes it highly unlikely that it could have crossed the Atlantic Ocean.
* Fossil Evidence: The presence of Mesosaurus fossils on both continents suggests that they were once connected, providing strong evidence for the theory of continental drift.
Other fossils that also contribute to the theory include:
* Glossopteris: This fern fossil was found in South America, Africa, India, Australia, and Antarctica.
* Cynognathus: This mammal-like reptile fossil was discovered in South America and Africa.
* Lystrosaurus: This herbivorous reptile fossil was found in South America, Africa, and Antarctica.
These fossils, found on continents now separated by oceans, are strong evidence that the continents were once joined together.
