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The Late Pleistocene saw the extinction of many mammals weighing more than 40 kilograms (88 lb), including around 80% of mammals over 1 tonne. The proportion of megafauna extinctions is progressively larger the further the human migratory distance from Africa, with the highest extinction rates in Australia, and North and South America.
The Late Pleistocene is an unofficial age in the international geologic timescale in chronostratigraphy, also known as the Upper Pleistocene from a stratigraphic perspective. It is intended to be the fourth division of the Pleistocene Epoch within the ongoing Quaternary Period. It is currently defined as the time between c. 129,000 and c ...
Possibly overexploitation of eggs for consumption, environmental changes (natural or caused by human activity), and competition with the Nile crocodile. [135] c. 600: Ua Huka rail: Gallirallus gracilitibia: Ua Huka, Marquesas Islands Human settlement. [136] 600-765 [66] Monkey-like sloth lemur: Mesopropithecus pithecoides: Central Madagascar
Extinction Date Probable causes [2] Quaternary: Holocene extinction: c. 10,000 BC – Ongoing: Humans [3] Quaternary extinction event: 640,000, 74,000, and 13,000 years ago: Unknown; may include climate changes, massive volcanic eruptions and Humans (largely by human overhunting) [4] [5] [6] Neogene: Pliocene–Pleistocene boundary extinction: 2 Ma
Cervalces scotti size chart. It was as large as the modern moose, with an elk -like head, long legs, and palmate antlers that were more complex and heavily branching than the moose. [ 3 ] Cervalces scotti reached 2.5 m (8.2 ft) in length and a weight of 708.5 kg (1,562 lb).
Bison antiquus is known from fossils found across North America south of the Laurentide Ice Sheet (whose southernmost extent is around the modern United States-Canada border), ranging from southern Canada (southern Alberta [8] and Ontario [10]) in the north, and Washingon State [11] and California [12] in the west, southwards to Southern Mexico [9] and eastwards to South Carolina and Florida.
Late Quaternary prehistoric birds are avian taxa that became extinct during the Late Quaternary – the Late Pleistocene or Early Holocene – and before recorded history, specifically before they could be studied alive by ornithological science. They had died out before the period of global scientific exploration that started in the late 15th ...
Paul Martin at Rampart Cave, home of the Shasta ground sloth in Grand Canyon, ca. 1975. Paul Schultz Martin (born in Allentown, Pennsylvania in 1928, died in Tucson, Arizona September 13, 2010) [1] [2] was an American geoscientist at the University of Arizona who developed the theory that the Pleistocene extinction of large mammals worldwide was caused by overhunting by humans. [3]