Geologically ancient DNA: fact or artefact?
Studies continue to report ancient DNA sequences and viable microbial cells that are many millions of years old. In this paper we evaluate some of the most extravagant claims of geologically ancient DNA. We conclude that although exciting, the reports suffer from inadequate experimental setup and insufficient authentication of results. Consequently, it remains doubtful whether amplifiable DNA sequences and viable bacteria can survive over geological timescales. To enhance the credibility of future studies and assist in discarding false-positive results, we propose a rigorous set of authentication criteria for work with geologically ancient DNA.
Hebsgaard
Martin B
MB
Department of Zoology, University of Oxford, South Parks Road, Oxford, UK OX1 3PS.
Phillips
Matthew J
MJ
Willerslev
Eske
E
D018647:Amber; D001106:Archaeology; D004247:DNA / Q000737:chemistry / Q000235:genetics / Q000302:isolation & purification*; D005580:Fossils; D010163:Paleontology
D018647:Amber; D004247:DNA