Most of the fragments (sorry don't have a %) could be mapped to a genome. In cases where a fragment could not be mapped it's more likely because of degradation than novel biology.
That said we did identify some novel microbial genomes. Not clear if they are actually ancient though vs contamination in the last 100 years or so.
That said we did identify some novel microbial genomes. Not clear if they are actually ancient though vs contamination in the last 100 years or so.