FOSSIL EXCAVATIONS on Rancho La Brea during a two-year period in 1913-15 

 produced a total of 4,264 skeletons identifiable as fossils of Pleistocene mammalia. 



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THREE SPECIES of Ground Sloths are known from the fossil finds in Los Angeles, 

 the largest being the Mylodon. They had powerful limbs and fearsome claws. 



