http://www.sciencemag.org/news/2021/02/mammoth-molars-yield-oldest-dna-ever-sequenced

Researchers sequenced DNA from two mammoths that lived more than 1 million years ago, including a steppe mammoth (illustrated here), the direct ancestor to woolly mammoths.

A genetic analysis of long-extinct Siberian mammoths has nearly doubled the record for the oldest DNA yet sequenced. The genetic material, from a creature that roamed frozen lands some 1.2 million years ago, pushes the study of ancient DNA closer to its theoretical limit—and reveals a new lineage of mammoth.