User:Abyssal/Portal:Quaternary
The Quaternary prehistory PortalIntroductionThe Quaternary (/kwəˈtɜːrnəri, ˈkwɒtərnɛri/ kwə-TUR-nə-ree, KWOT-ər-nerr-ee) is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS). It follows the Neogene Period and spans from 2.58 million years ago to the present. As of 2023, the Quaternary Period is divided into two epochs: the Pleistocene (2.58 million years ago to 11.7 thousand years ago) and the Holocene (11.7 thousand years ago to today); a third epoch, the Anthropocene, has recently been proposed, but it is not officially recognised by the ICS. The Quaternary Period is typically defined by the cyclic growth and decay of continental ice sheets related to the Milankovitch cycles and the associated climate and environmental changes that they caused. (Full article...) Selected article on the Quaternary prehistory world and its legaciesThe monkey lemurs are considered to be most closely related to the living indriids and the recently extinct sloth lemurs, although recent finds had caused some dispute over a possible closer relation to living lemurids. Genetic tests, however, have reaffirmed the previously presumed relationship. Hadropithecus lived in open habitat in the Central Plateau, South, and Southwest regions of Madagascar. It is known only from subfossil or recent remains and is considered to be a modern form of Malagasy lemur. It died out around 444–772 CE, shortly after the arrival of humans on the island. (see more...) Selected article on the Quaternary prehistory in human science, culture and economicsThe book was written for non-specialist readers and attracted widespread interest upon its publication. As Darwin was an eminent scientist, his findings were taken seriously and the evidence he presented generated scientific, philosophical, and religious discussion. Within two decades there was widespread scientific agreement that evolution, with a branching pattern of common descent, had occurred, but scientists were slow to give natural selection the significance that Darwin thought appropriate. During the "eclipse of Darwinism" from the 1880s to the 1930s, various other mechanisms of evolution were given more credit. With the development of the modern evolutionary synthesis in the 1930s and 1940s, Darwin's concept of evolutionary adaptation through natural selection became central to modern evolutionary theory, and it has now become the unifying concept of the life sciences. (see more...) Selected image
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Need help?Do you have a question about Abyssal/Portal:Quaternary that you can't find the answer to? Consider asking it at the Wikipedia reference desk. TopicsGeochronology - Quaternary (Pleistocene - Holocene) Quaternary landmasses - Major Quaternary events - Quaternary biota appearances - Fossil sites - Stratigraphic units - History - History of paleontology - Timeline of paleontology Researchers - Culture - Treatise on Invertebrate Paleontology - Vertebrate Paleontology Quality ContentFeatured Quaternary prehistory articles - Good Quaternary prehistory articles - SubcategoriesThings you can doRelated contentAssociated WikimediaThe following Wikimedia Foundation sister projects provide more on this subject:
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