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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. [11]
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]
Beginning in the 1950s, Paul S. Martin proposed the "overkill hypothesis", suggesting that the Late Pleistocene megafauna extinctions in North America were driven by human hunting, including by Clovis peoples, with the hunting and extinction of large herbivores having a knock-on effect causing the extinction of large carnivores.
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 ...
Ground sloths, which were represented by over 30 living species during the Late Pleistocene, abruptly became extinct on the American mainland as part of the end-Pleistocene extinction event around 12,000 years ago, simultaneously along with the majority of other large animals in the Americas. Their extinction has been posited to be the result ...
"Once we realized that the worst, most offensive thing you could do in Chicago is to step onstage not wearing a T-shirt and jeans, we got our sparkly suits out. Any button we could possibly push ...
Late that afternoon Darren Doss, a slim, black-haired 22-year-old, watched as his fellow Marines zipped up the two body bags, placed them tenderly on stretchers and ran out to the waiting helicopter. Away it went with the remains of Smitty and Angus, and Doss with a heavy heart turned back into the tent.
Hamm shed his haunted demeanor. He cut his bangs so they no longer shielded his eyes, and his manner became more direct. Late one evening, in the second-floor library, Hamm gave a new resident a pep talk. The newbie had detoxed at a separate facility, but during his three-week wait to enter Grateful Life he had relapsed.