Question

how did fossils of land animals were found in continents that are across oceans from one another?
animals evolved separately on each continent.
land bridges existed between the continents.
animals swam across the ocean to new continents.
continents were once one landmass and have drifted apart.

Explanation:

The theory of continental drift suggests that continents were once joined as a single landmass (Pangaea) and have since drifted apart. This explains how fossils of the same land - animals can be found on continents now separated by oceans. Land bridges are not the most widely - accepted explanation for this large - scale distribution, and it is highly unlikely for most land animals to swim across vast oceans. Separate evolution on each continent would not result in the same fossil species being found across oceans.

Answer:

Continents were once one landmass and have drifted apart.