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The Mesozoic is the middle of the three eras since complex life evolved: the Paleozoic, the Mesozoic, and the Cenozoic. The era began in the wake of the Permian–Triassic extinction event, the largest mass extinction in Earth's history, and ended with the Cretaceous–Paleogene extinction event, another mass extinction whose victims included ...
A European school led by Gabriel de Mortillet asserted that there was a gap between the earlier and later. Edouard Piette claimed to have filled the gap with his naming of the Azilian Culture. Knut Stjerna offered an alternative in the "Epipaleolithic", suggesting a final phase of the Paleolithic rather than an intermediate age in its own right ...
Since the 19th century, a significant amount of research has been conducted on the Cretaceous–Paleogene extinction event, the mass extinction that ended the dinosaur-dominated Mesozoic Era and set the stage for the Age of Mammals, or Cenozoic Era. A chronology of this research is presented here.
Troops are deployed on the streets of Northern Ireland, marking the start of the Troubles. 1972: March: The Parliament of Northern Ireland is prorogued (and abolished later the following year). 1973: 1 January: Ireland joins the European Community along with the United Kingdom and Denmark. 1973: June: The Northern Ireland Assembly is elected ...
c. 490 Ma – Beginning of the Caledonian Orogeny as three continents and terranes of Laurentia, Baltica and Avalonia collide resulting in mountain-building recorded in the northern parts of Ireland and Britain, the Scandinavian Mountains, Svalbard, eastern Greenland and parts of north-central Europe. c. 488 Ma – Earliest brittle stars.
Reconstruction of a hunter-gatherer hut and canoe – Irish National Heritage Park. Evidence of human activity during the Mesolithic period in Irish history has been found in excavations at the Mount Sandel Mesolithic site in the north of the island, cremations on the banks of the River Shannon in the west, campsites at Lough Boora in the midlands, and middens and other sites elsewhere in the ...
Unlike the Early European modern humans that inhabited Europe earlier, these populations form part of the ancestry of modern Europe. [35] 36 kya: Evidence of humans using fibers in a cave in present-day Georgia. [50] [51] 33 kya: Earliest evidence of humanoids in Ireland. [52] 33 kya – 22 kya: Gravettian period in Europe. [53] [54]
The event marks the end of the Mesozoic Era and the beginning of the Cenozoic Era. [12] "Tertiary" being no longer recognized as a formal time or rock unit by the International Commission on Stratigraphy, the K-T event is now called the Cretaceous—Paleogene (or K-Pg) extinction event by many researchers.