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The map of North America with the Western Interior Seaway during the Campanian. The Western Interior Seaway (also called the Cretaceous Seaway, the Niobraran Sea, the North American Inland Sea, or the Western Interior Sea) was a large inland sea that split the continent of North America into two landmasses for 34 million years.
An island can also be entirely oceanic while still being associated with a continent by geology (e.g. Bermuda, the Australian Indian Ocean Territories) or by common geopolitical convention (e.g. Ascension Island, the South Sandwich Islands). Another example is the grouping into Oceania of the Pacific Islands with Australia and Zealandia.
The Continental Divide in North America in red and other drainage divides in North America The Continental Divide in Central America and South America. The Continental Divide of the Americas (also known as the Great Divide, the Western Divide or simply the Continental Divide; Spanish: Divisoria continental de las Américas, Gran Divisoria) is the principal, and largely mountainous ...
Continent" meant, at that time, one of the three known continents, Europe, Africa and Asia, that adjoined each other (from Latin "continens"="touching") surrounded by the Ocean, which was divided by Africa into the Western, or Atlantic and Eastern, or Indian Oceans which contained the Earth's large and small islands. [16]
The Rheic Ocean (/ ˈ r eɪ ɪ k /; RAY-ik) was an ocean which separated two major paleocontinents, Gondwana and Laurussia (Laurentia-Baltica-Avalonia).One of the principal oceans of the Paleozoic, its sutures today stretch 10,000 km (6,200 mi) from Mexico to Turkey and its closure resulted in the assembly of the supercontinent Pangaea and the formation of the Variscan–Alleghenian–Ouachita ...
Northern America—the northern region of the North American continent, including Canada, the United States, Greenland, Saint-Pierre and Miquelon, and Bermuda. Latin America and the Caribbean-extending from The Bahamas and Mexico to Argentina and Chile. Central America—the countries south of Mexico and north of Colombia. The Caribbean.
The continents now known as Africa and South America started to split around 140 million years ago, researchers said. The south Atlantic Ocean eventually filled the void.
In contemporary English, North and South America are generally considered separate continents, and taken together are called the Americas in the plural. When conceived as a unitary continent, the form is generally the continent of America in the singular.