Name Date Class SECTION 1-3 ENRICH The Curious Case of Mesosaurus Africa South America Mesosaurus Areas where Mesosaurus fossils have been found About 265 million years ago a reptile called Mesosaurus lived in just a few places on Earth. These fossils were found in only two regions southern Africa and the southern part of South America. The shaded areas on the map show where fossils of Mesosaurus have been discovered. This distribution is a curious one only two regions far from each other and separated by the Atlantic Ocean. What could explain this distribution Answer the following questions on a separate sheet of paper. 1. Describe the kind of environment in which Mesosaurus lived. 2. Is it likely that Mesosaurus swam back and forth across the Atlantic Ocean Explain. 3. What could explain this distribution of Mesosaurus fossils 4. Does the case of Mesosaurus support Wegener s theory of continental drift Explain why or why not. This fairly small lizardlike reptile measured 71 centimete....
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What could explain this distribution of Mesosaurus fossils?
Mesosaurus fossils, now found in Africa and South America, were separated during the breakup of Pangea that began 250 million years ago. The fact that the fossils are the same in both places is powerful evidence for Pangea's existence.
What could explain the distribution of Mesosaurus fossils?
As Mesosaurus was a coastal animal, and therefore less likely to have crossed the Atlantic Ocean, this distribution indicated that the two continents used to be joined together.
Is it likely that Mesosaurus swam back and forth the Atlantic Ocean?
Remains of Mesosaurus, a freshwater crocodile-like reptile that lived during the early Permian (between 286 and 258 million years ago), are found solely in Southern Africa and Eastern South America. It would have been physiologically impossible for Mesosaurus to swim between the continents.
How did Mesosaurus swam the Atlantic Ocean?
The fossils of this prehistoric reptile have been discovered in eastern South America and southern Africa, and since Mesosaurus lived in freshwater lakes and rivers, it clearly couldn't have swum across the expanse of the southern Atlantic Ocean.
Why was it not possible for Mesosaurus to swim across the ocean between Africa and South America?
Mesosaurus fossils are found today in rocks in southern Africa and eastern South America. Back in the Permian those two locations were jammed against each other as part of the southern half of Pangaea called Gondwana, so the living range of Mesosaurus did not span an entire ocean.
What kind of creature was the Mesosaurus?
Mesosaurus was a lizard-like animal that lived in South America and Africa during the Permian Period. Mesosaurus is considered one of the earliest aquatic relatives of reptiles and mammals [1].
What kind of environment did the Mesosaurus live in?
Mesosaurus, (genus Mesosaurus), early aquatic relative of reptiles, found as fossils from the Early Permian Period (299 million to 271 million years ago) in South Africa and South America. Mesosaurus lived in freshwater lakes and ponds.
Is it likely that Mesosaurus swam back and forth across the Atlantic Ocean?
Answer. No, Their arms and back legs are too short, but the mesosaurus was also a coastal animal! It's very unlikely.
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