Taxonomy is a branch of biology that deals with the classification of animals and plant species. Classification is important because it puts the species in groups due to their similarities, which creates animal families. Some of the biggest classes include mammals, birds, fish, reptiles, amphibians. Taxonomy helps scientists break animals into groups even more specific than these more broad terms. Hope this helps you!
I would select collecting fossil evidence from the South American and African plates to compare to see if there are similar fossils that could indicate if these two plates/continents were at one time joined together before the break-up of Gondwanaland.