Title: Continent
Content: a period of 2.0–1.8 billion years ago and broke up about 1.5–1.3 billion years ago. The supercontinent Rodinia is thought to have formed about 1 billion years ago and to have embodied most or all of Earth's continents, and broken up into eight continents around 600 million years ago. The eight continents later re-assembled into another supercontinent called Pangaea; Pangaea broke up into Laurasia (which became North America and Eurasia) and Gondwana (which became the remaining continents). The following table lists the seven continents with their highest and lowest points on land, sorted in decreasing highest points. † The lowest

Title: Pangaea
Content: Earth, land"). The concept that the continents once formed a continuous land mass was first proposed by Alfred Wegener, the originator of the scientific theory of continental drift, in his 1912 publication "The Origin of Continents" ("Die Entstehung der Kontinente"). He expanded upon his hypothesis in his 1915 book "The Origin of Continents and Oceans" ("Die Entstehung der Kontinente und Ozeane"), in which he postulated that, before breaking up and drifting to their present locations, all the continents had formed a single supercontinent that he called the ""Urkontinent"". The name "Pangea" occurs in the 1920 edition of "Die Entstehung der

Title: Ur (continent)
Content: Ur (continent) Ur is a proposed supercontinent that formed in the Archean (3.1 billion). In Roger's reconstruction Ur is half a billion years older than Arctica and, in the early period of its existence, it was probably the only continent on Earth, and as such can be considered a supercontinent, though it was probably smaller than present-day Australia. In more recent works geologists often refer to both Ur and other proposed Archaean continental assemblages as supercratons. Ur can, nevertheless, be half a billion years younger than Vaalbara, but the concepts of these two early cratonic assemblages are incompatible. About 1,300–1,071

Title: Zealandia
Content: . The total human population of Zealandia today is about 5 million people. Zealandia Zealandia (), also known as the New Zealand continent or Tasmantis is an almost entirely submerged mass of continental crust that sank after breaking away from Australia 60–85 million years ago, having separated from Antarctica between 85 and 130 million years ago. It has variously been described as a continental fragment, a microcontinent, a submerged continent, and a continent. The name and concept for Zealandia was proposed by Bruce Luyendyk in 1995. Zealandia's status as a continent is not universally accepted, but New Zealand geologist Nick

Title: Archean
Content: rock, represent sutures between the protocontinents. The Earth's continents started to form in the Archean, although details about their formation are still being debated, due to lack of extensive geological evidence. One hypothesis is that rocks that are now in India, western Australia, and southern Africa formed a continent called Ur as of 3,100 Ma. A differing conflicting hypothesis is that rocks from western Australia and southern Africa were assembled in a continent called Vaalbara as far back as 3,600 Ma. Although the first continents formed during this eon, rock of this age makes up only 7% of the present

Question: What name is given to the Earth's single continent, which existed 250 million years ago?
Answer: Pangaea