Search results
Results from the WOW.Com Content Network
The Holocene (/ ˈhɒl.əsiːn, - oʊ -, ˈhoʊ.lə -, - loʊ -/) [ 2 ][ 3 ] is the current geological epoch, beginning approximately 11,700 years ago. [ 4 ] It follows the Last Glacial Period, which concluded with the Holocene glacial retreat. [ 4 ] The Holocene and the preceding Pleistocene [ 5 ] together form the Quaternary period.
The Holocene extinction, or Anthropocene extinction, [3] [4] is the ongoing extinction event caused by humans during the Holocene epoch. These extinctions span numerous families of plants [ 5 ] [ 6 ] [ 7 ] and animals, including mammals , birds, reptiles, amphibians , fish, and invertebrates , and affecting not just terrestrial species but also ...
1926 [ 415 ] Extermination campaign. The Great Plains wolf has been later determined to be continuous morphologically [ 410 ] and genetically [ 416 ] with the still existing Mexican wolf, which would use the name C. l. nubilus if placed in the same subspecies, due to being the older one. Red-moustached fruit dove.
The Holocene Climate Optimum (HCO) was a warm period in the first half of the Holocene epoch, that occurred in the interval roughly 9,500 to 5,500 years BP, [ 1 ] with a thermal maximum around 8000 years BP. It has also been known by many other names, such as Altithermal, Climatic Optimum, Holocene Megathermal, Holocene Optimum, Holocene ...
The 10th millennium BC spanned the years 10,000 BC to 9001 BC (c. 12 ka to c. 11 ka). It marks the beginning of the transition from the Palaeolithic to the Neolithic via the interim Mesolithic (Northern Europe and Western Europe) and Epipaleolithic (Levant and Near East) periods, which together form the first part of the Holocene epoch that is generally believed to have begun c. 9700 BC (c. 11 ...
The Holocene calendar, also known as the Holocene Era or Human Era (HE), is a year numbering system that adds exactly 10,000 years to the currently dominant (AD/BC or CE/BCE) numbering scheme, placing its first year near the beginning of the Holocene geological epoch and the Neolithic Revolution, when humans shifted from a hunter-gatherer lifestyle to agriculture and fixed settlements.
When the glaciers began to retreat, the ancient natural communities of the southeast would be the primary source of colonization for the newly exposed areas in the midwest. [5] Warming and drying during the Holocene climatic optimum began about 9,000 years ago and affected the vegetation of the southeast. The prairies and grassy woodlands of ...
End Ordovician: 440 million years ago, 86% of all species lost, including graptolites. Late Devonian: 375 million years ago, 75% of species lost, including most trilobites. End Permian, The Great Dying: 251 million years ago, 96% of species lost, including tabulate corals, and most trees and synapsids.