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Western Interior Seaway. The Western Interior Seaway (also called the Cretaceous Seaway, the Niobraran Sea, the North American Inland Sea, and the Western Interior Sea) was a large inland sea that split the continent of North America into two landmasses for 34 million years. The ancient sea, which existed from the early Late Cretaceous (100 Ma ...
Detail of the map showing the names "Catigara" and "Mallaqua" where "was slain St. Thomas". The Waldseemüller map or Universalis Cosmographia ("Universal Cosmography ") is a printed wall map of the world by German cartographer Martin Waldseemüller, originally published in April 1507. It is known as the first map to use the name "America".
Geological history of North America. The geological history of North America comprises the history of geological occurrences and emergence of life in North America during the interval of time spanning from the formation of the Earth through to the emergence of humanity and the start of prehistory. At the start of the Paleozoic Era, what is now ...
List. Bridge River Ocean, the ocean between the ancient Insular Islands (that is, Stikinia) and North America. Cache Creek Ocean, a Paleozoic ocean between the Wrangellia Superterrane and Yukon-Tanana Terrane. Iapetus Ocean, the Southern hemisphere ocean between Baltica and Avalonia. Kahiltna-Nutotzin Ocean, Mesozoic.
West coast of North America. The human history of the west coast of North America [1] is believed to stretch back to the arrival of the earliest people over the Bering Strait, or alternately along the ice free coastal islands of British Columbia (See, through the development of significant pre-Columbian cultures and population densities, to the arrival of the European explorers and colonizers.
Reenactment of a Viking landing in L'Anse aux Meadows. Pre-Columbian transoceanic contact theories are speculative theories which propose that visits to the Americas, interactions with the Indigenous peoples of the Americas, or both, were made by people from elsewhere prior to Christopher Columbus 's first voyage to the Caribbean in 1492. [1]
His map covers the entire world in a double hemisphere projection. This map follows shortly after the explorations of Captain Cook in the Arctic and Pacific Northwest, so the general outline of North America is known. However, when this map was made, few inland expeditions had extended westward beyond the Mississippi River. [55]
Laurentia basement rocks. Laurentia or the North American Craton is a large continental craton that forms the ancient geological core of North America.Many times in its past, Laurentia has been a separate continent, as it is now in the form of North America, although originally it also included the cratonic areas of Greenland and the Hebridean Terrane in northwest Scotland.