the continental drift theory was first brought to attention by Alfred Wegener, And some of the theories that he had was that the edges of the continents perfectly matches with one another, supporting that the continents were once all together. because there were fossils such as glossopteris and marsupials were found in the continents that indicate that the continents were once all attached to each other. and also similar rock types were found to be present in those continents and are determined by the correlation method. The remains of the organisms such as mosasaurs, marsupials and fossilized plants. and these fossils indicates the existence of the large supercontinent named Pangaea that got separated due to the plate motion.

That's correct! The theory of continental drift was first proposed by Alfred Wegener in the early 20th century. Wegener observed several pieces of evidence that supported his theory.

One piece of evidence is the matching shape of the continents. Wegener noticed that the coastlines of South America and Africa seemed to fit together like pieces of a puzzle. This observation led him to suggest that they were once connected.

Another line of evidence comes from fossils found on different continents. Wegener noticed that certain fossils, like the Glossopteris plant and certain types of marsupials, were found on multiple continents that are now separated by oceans. This indicates that these continents were once joined together, allowing these organisms to spread across them.

Furthermore, similar rock types and geological features were found on different continents. For example, rock formations in South America matched those in Africa, indicating a shared geological history.

Additionally, Wegener examined the distribution of ancient climate indicators, such as coal deposits, which were found in regions that currently have very different climates. This discovery suggested that these regions were once part of a larger landmass where the climate was more suitable for the formation of coal.

All these observations, along with others, supported Wegener's hypothesis that the continents were once part of a supercontinent called Pangaea that gradually broke apart and drifted to their current positions due to the movement of tectonic plates.

It's important to note that while Wegener's theory faced skepticism at first, further scientific advancements and evidence in the field of plate tectonics have now confirmed and expanded upon his initial ideas.