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Paul Schultz Martin
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Paul Schultz Martin 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. Martin's work bridged the fields of ecology, anthropology, geosciences, and paleontology.
Paul Martin at Rampart Cave, home of the Shasta ground sloth in Grand Canyon, ca. 1975
Paul Martin at Rampart Cave, home of the Shasta ground sloth in Grand Canyon, ca. 1975
Paul Martin's "overkill hypothesis" prevails over the climate hypothesis when the timing of megafaunal extinctions in different locales is considered
Paul Martin's "overkill hypothesis" prevails over the climate hypothesis when the timing of megafaunal extinctions in different locales is considered — especially when paired with time of first arrival by humans.
Paul Schultz Martin, 2008, holding a dungball of the extinct Shasta Ground Sloth, with whom Martin claimed to have "a totem relationship."
Paul Schultz Martin, 2008, holding a dungball of the extinct Shasta Ground Sloth, with whom Martin claimed to have "a totem relationship."
Native fruits of North America with anachronistic features.
Native fruits of North America with anachronistic features.
Ground sloth
Videos
Ground sloths are a diverse group of extinct sloths in the mammalian superorder Xenarthra. Ground sloths varied widely in size, with the largest, belonging to genera Megatherium and Eremotherium, being around the size of elephants. Ground sloths are a paraphyletic group, as living tree sloths are thought to have evolved from ground sloth ancestors.
Ground sloth
Fossil Eremotherium skeleton, National Museum of Natural History, Washington, DC.
Fossil Eremotherium skeleton, National Museum of Natural History, Washington, DC.
Paramylodon harlani, Texas Memorial Museum, University of Texas at Austin
Paramylodon harlani, Texas Memorial Museum, University of Texas at Austin
A Tamandua anteater in an upright defensive stance similar to those presumed to have been adopted by ground sloths, per trackways preserved in New Mex
A Tamandua anteater in an upright defensive stance similar to those presumed to have been adopted by ground sloths, per trackways preserved in New Mexico