The Prokaryotic Genome Annotation Pipeline (PGAP) was used to identify tRNA and rRNA genes. Completion and contamination were estimated by CheckM. Although analysis with CheckM suggested low completeness, this was likely due to the reduced genome size typical of Nanoarchaeota. The program identified 120-121 archaeal marker genes, which is very similar to the number of marker genes (118-119) identified in the complete genomes of two other Nanoarchaeota, Cand. Nanopusillus acidilobi and Nanoarchaeum equitans (see St. John et al., 2019). For this reason, completion is estimated at 100%.