The South American plate moved apart gradually

hapter 3: How did the Mesosaurus fossils on the South American Plate and African Plate get so far apart? Students figure out: The Mesosaurus fossils moved apart gradually over tens of millions of years. Earth's plates travel at a rate too slow to be experienced by humans.

Explanation:

the electromagnetic energy from the sun arrives in the form of visible and invisible light.

the oldest known insects are believed to live around 400 millions ago as suggested by the fossil records.   some plants having woody stems also evolved during this time.

after the evolution of insects the first four legged species or the tetrapods evolved in shallow freshwater habitats from the intermediate species approximately 397 million years ago. the tetrapods went on conquering the land giving rise to amphibians, reptiles, mammals and birds.

the major split in tetrapods first occurred 340 million years ago branching off from amphibians.

363 million years ago when the carboniferous period began the insects started roaming on land and taking flights, following which the four limbed tetrapods adapted in the terrestrial habitat.