The abundance of interrupted palindromes in sequencing reads from ancient and historic specimens. Only palindromic sequences longer than three basepair and alignments with a minimum MapQ of 25 are reported.

1Rasmussen et al. 2010 using the TruSeq Sample Preparation kit (Illumina.com).2Rasmussen et al. 2011 using the Rapid Library kit from Roche-454 (Branford, CO) and Illumina adapter mix.3Sequin-Orland et al. 2013 using the NEBNext Quick DNA Library Prep Master Mix Set for 454 (New England BioLabs, ref E6090 for A-tailed (AT) ligation of forked Illumina adapters and the NEBNext DNA Library Prep Master Mix Set for 454 (New England BioLabs, ref E6070) for blunt-end (BE) ligation of Illumina adapters without forked shape.+A subset of available aDNA libraries was inspected for artifacts.