Later, between 1909 and 1915 sediments in Mammoth Cave that contained fossils were hauled out and examined in a chaotic manner that no scientist today would approve.

There are at least 10 species Paleontology fossils, members of Mammuthus-Coelodonta groups in late Pleistocene in northeast of China.

But most prior discoveries of mammoth bones have involved fragments washed down during the prehistoric floods that repeatedly swept across the Columbia Basin at the end of the Ice Age.