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If you are referring to Pangea, the theorized land mass that all continents were once part of, they know this because of the continents' puzzle like features, because things most likely exploded apart, causing the seemingly random shapes of the shores of the continents.

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13y ago

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What do scientists call the land mass that all the continents used to be in?

Scientists refer to the land mass that all the continents used to be in as Pangaea. It is believed that Pangaea existed about 300 million years ago and eventually broke apart to form the continents as we know them today.


What did scientists call the land mass that all the continents used to be in?

Scientists called the now separated land mass "Pangaea."


What was the land mass called before the continents split?

The land mass was called Pangaea before the continents split into the continents we know today. Pangaea was a supercontinent that existed about 335 million years ago.


What is the name of the land mass made of all of the continents?

The name of the land mass made of all of the continents is Pangaea. It was a supercontinent that existed about 300 million years ago before it broke apart into the continents we know today.


What is the continents of Asia are really parts of the same land mass?

What is the continents of asia are really parts of the same land mass?


Which continent has the least land mass?

Antarctica has the least land mass of all the continents.


Which two continents are part of huge land mass that were separated?

All the continents used to be a part of one land mass and separated. This supercontinent was Pangea.


What is the name of the single land mass?

The single land mass is called Pangaea. It was the supercontinent that existed about 300 million years ago before breaking apart into the continents we know today.


Which of the seven continents is biggest in land area?

Asia is the biggest in land mass.


What is the name of the first land mass brfore it broke up into contenents?

The first land mass before it broke up into continents is called Pangaea. It was a supercontinent that existed about 335 million years ago and eventually split apart to form the continents we know today.


If fossils of the same land animal are on different continents what do you Infer?

The inference is that both continents were once one single land-mass.


What continents share the same land mass?

Europe and Asia