Wegener used different pieces of evidence to support his theory, like the presence of fossils of the same organisms on different continents. Option A.Fossils.
What was the evidence used by Wegener to support his theory of continental drift?
Wegener proposed for the first time that continents were once all together composing a single continent named Pangea. With time, these land masses split and separated into many pieces. This was the first idea about continental drift.
A list of 10 pieces of evidence supported the theory of tectonic plates and continental drift.
Let us remember that
• The tectonic plates theory explains the movement
of the different plates based on the crust movements.
• The continental drift theory explains how these
movements have been taking place for millions
of years.
The list includes Gondwana glaciation evidence, lithological and structural evidence, plates fitting together, and paleontological evidence.
Paleontological evidence
• Plant and animal fossils distribution suggests the existence of a big unique continent. When reconstructing the supercontinent, the areas where these fossils were found fitted and got together in the same supercontinental region.
• Glossopteris (fern) impressions are widely distributed in determined areas of Africa, South America, India, and Australia.
• Terrestrial vertebrate fossils also support the theory. The presence of Triassic tetrapods in all continents suggests terrestrial corridors between landmasses.
⇒ Lystrosaurus ⇒ Triassic reptile ⇒ Found in Africa, India, and Antarctica
⇒ Mesosaurus ⇒ Triassic reptile ⇒ Found in South America and Africa
⇒ Cygnonathus ⇒ Triassic reptile ⇒ Found in South America and Africa
Finding Cynognathus fossils in South America and Africa suggests that these two continents were once together, and these animals used to live in the same region.
With time, these continents diverged and got separated by the ocean. The region where Cynognathus used to live got divided. Some of the fossils remained in South America and some others in Africa.
The correct answer is A. Fossils
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