An international team of scientists has sequenced and analyzed DNA from three mammoth specimens, two of which are more than one million years old. The results show that two distinct mammoth lineages were present in eastern Siberia during the Early Pleistocene; one of these lineages gave rise to the woolly mammoth (Mammuthus primigenius) and the other represents a previously unrecognized lineage that was ancestral to the first mammoths to colonize...
