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The Mesozoic Era [3] is the era of Earth's geological history, lasting from about , comprising the Triassic, Jurassic and Cretaceous Periods.It is characterized by the dominance of gymnosperms such as cycads, ginkgoaceae and araucarian conifers, and of archosaurian reptiles such as the dinosaurs; a hot greenhouse climate; and the tectonic break-up of Pangaea.
The Triassic is the first and shortest period of the Mesozoic Era and the seventh period of the Phanerozoic Eon. Both the start and end of the period are marked by major extinction events . [ 10 ] The Triassic Period is subdivided into three epochs: Early Triassic , Middle Triassic and Late Triassic .
The mountains of northwest Ireland were formed during the collision, as was the granite that is found in locations in Donegal and Wicklow. The Irish landmass was now above sea level and lying near the equator, and fossil traces of land-based life forms survive from this period.
In Europe, most of the Lower Triassic is composed of Buntsandstein, a lithostratigraphic unit of continental red beds. [ citation needed ] The Early Triassic and partly also the Middle Triassic span the interval of biotic recovery from the Permian-Triassic extinction event , the most severe mass extinction event in Earth's history.
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 ...
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 ...
This produced a Mesozoic CO 2 high that contributed to the very warm climate of the Early Cretaceous. [56] The opening of the Tethys Ocean also contributed to the warming of the climate. [ 57 ] The very active mid-ocean ridges associated with the breakup of Pangaea raised sea levels to the highest in the geological record, flooding much of the ...
Mesozoic life of Europe (4 C, 6 P) Mesozoic paleontological sites of Europe (1 C, 6 P) A. Mesozoic Austria (3 C) B. ... Mesozoic Ireland (1 C) Mesozoic Italy (3 C) N.