Tyler J. Murchie, Scott L. Cocker, Sina Baleka, Nicola Alexandra Vogel, Libby Natola, Emil Karpinski, Diana Tirlea, McIntyre A. Barrera, Danielle M. Grant, Evan Morien, George S. Long, Linda Y. Rutledge, Grant D. Zazula, Britta J. Jensen, Duane G. Froese, Hendrik N. Poinar. "Ground squirrel coprolites preserve complex archives of ancient environmental DNA over 700,000 years." Nature Communications, 2026. doi:10.1038/s41467-026-72977-6