When a land bridge formed about 70 million years ago,marsupial mammals moved into South America and displaced many of the placental mammal species.

Name: When a land bridge formed about 70 million years ago,marsupial mammals moved into South America and displaced many of the placental mammal species.
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Placental mammals displaced many of the marsupial mammals in South America beginning around 2 million years ago.

When a Land Bridge Formed About 70 Million Years Ago,marsupial