Northern landmass that formed part of the Pangaea supercontinent
Laurasia
Laurasia (centre) and Gondwana (bottom) as part of Pangaea 200 Mya (Early Jurassic)
Historical continent
Formed
1,071 Mya (Proto-Laurasia) 253 Mya
Type
Supercontinent
Today part of
Europe (without the Balkan Peninsula)
Asia (without the Indian subcontinent and the Arabian subcontinent)
North America
Smaller continents
Laurentia
Baltica
Kazakhstania
Siberia
North China
South China
Tarim
Tectonic plates
Eurasian Plate
North American Plate
Laurasia (/lɔːˈreɪʒə,-ʃiə/)[1] was the more northern of two large landmasses that formed part of the Pangaea supercontinent from around 335 to 175 million years ago (Mya), the other being Gondwana. It separated from Gondwana 215 to 175 Mya (beginning in the late Triassic period) during the breakup of Pangaea, drifting farther north after the split and finally broke apart with the opening of the North Atlantic Ocean c. 56 Mya. The name is a portmanteau of Laurentia and Asia.[2]
Laurentia, Avalonia, Baltica, and a series of smaller terranes, collided in the Caledonian orogeny c. 400 Ma to form Laurussia/Euramerica. Laurussia/Euramerica then collided with Gondwana to form Pangaea. Kazakhstania and Siberia were then added to Pangaea 290–300 Ma to form Laurasia. Laurasia finally became an independent continental mass when Pangaea broke up into Gondwana and Laurasia.[3]
^Oxford English Dictionary
^Du Toit 1937, p. 40
^Torsvik & Cocks 2004, Laurussia and Laurasia, pp. 558, 560
Laurasia (/lɔːˈreɪʒə, -ʃiə/) was the more northern of two large landmasses that formed part of the Pangaea supercontinent from around 335 to 175 million...
proto-Laurasia, proto-Gondwana, and the smaller Congo Craton. Proto-Laurasia and proto-Gondwana were separated by the Proto-Tethys Ocean. Proto-Laurasia split...
defined as the ocean located between the ancient continents of Gondwana and Laurasia. After the opening of the Indian and Atlantic oceans during the Cretaceous...
years ago, Gondwana and Laurasia split apart due to the widening of the Atlantic Ocean. Finally and very soon afterwards, Laurasia itself split up again...
Carboniferous to form Pangea. It began to separate from northern Pangea (Laurasia) during the Triassic, and started to fragment during the Early Jurassic...
Jurassic, the supercontinent Pangaea had begun rifting into two landmasses: Laurasia to the north and Gondwana to the south. The climate of the Jurassic was...
the Jurassic, Pangaea split into Laurasia and Gondwana, with Avalonia as part of Laurasia. In the Cretaceous, Laurasia broke up into North America and...
rodent fossil record dates back to the Paleocene on the supercontinent of Laurasia. Rodents greatly diversified in the Eocene, as they spread across continents...
Jurassic period it began to gradually rift into two separate landmasses, Laurasia to the north and Gondwana to the south. The global climate during the Triassic...
Pannotia formed as Proto-Laurasia was added to Gondwana c. 600 Ma (left) and broke up 550 Ma (right) when Laurasia broke apart. View centred on the South...
Mesoproterozoic and are about 1,600 million years old. This margin existed until Laurasia and Gondwana collided in the Pennsylvanian subperiod to form Pangea. Pangea...
years ago. It broke free into the Neo-Tethys Ocean and headed towards Laurasia. About 200 million years ago, the microcontinent of Iberia separated from...
When Pangaea began to rift around 200 mya, North America became part of Laurasia, before it separated from Eurasia as its own continent during the mid-Cretaceous...
exception is smaller placentals such as rodents and primates, who left Laurasia and colonized Africa and then South America via rafting. In Africa, the...
supercontinent Pangaea, which gradually split into a northern continent, Laurasia, and a southern continent, Gondwana. This created the passive continental...
presence/absence data. The superorder originated on the northern supercontinent of Laurasia, after it split from Gondwana when Pangaea broke up. Its last common ancestor...
and Eurasia. Its flora is inherited from the ancient supercontinent of Laurasia. However, parts of the floristic kingdom (and most of its Circumboreal...
from the remaining Ilex when the Earth mass broke away into Gondwana and Laurasia about 82 million years ago, resulting in a physical separation of the groups...
and terebratulid and rhynchonellid brachiopods. Breakup of Pangaea into Laurasia and Gondwana, with the latter also breaking into two main parts; the Pacific...
The Cimmeria continent rifted away from Gondwana and drifted north to Laurasia, causing the Paleo-Tethys Ocean to shrink. A new ocean was growing on its...
Oldest Known Dispersal Event of the Crown Pleurodira from Gondwana to Laurasia". Journal of Systematic Palaeontology. 15 (9): 709–731. Bibcode:2017JSPal...
on the ancient supercontinent of Gondwana soon after it broke away from Laurasia 200 million years ago. The short-tailed forms may have been driven from...
from 419 to 359 Ma. The period was a time of great tectonic activity, as Laurasia and Gondwana drew closer together. The continent Euramerica (or Laurussia)...
of the last supercontinent, Pangaea. By 180 Ma, Pangaea broke up into Laurasia and Gondwana.[citation needed] The rate of the evolution of life as recorded...
555-515 Ma Gondwana Neoproterozoic 550 Ma Cimmeria Neoproterozoic 550 Ma Laurasia Neoproterozoic 550 Ma Cuyania Paleozoic ~420-390 Ma Chilenia Paleozoic...
Matsumoto R, Evans SE (2010). "Choristoderes and the freshwater assemblages of Laurasia". Journal of Iberian Geology. 36 (2): 253–274. Bibcode:2010JIbG...36..253M...
between the Yenisey River and the Lena River. It developed from fragments of Laurasia, whose rocks were mainly Precambrian crystalline rocks, gneisses, and schists...
icefloes north and reinforcing the cooling. The northern supercontinent of Laurasia began to fragment, as Europe, Greenland and North America drifted apart...
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