Analysed_contigs file contains PacBio contigs from a whole genome assembly of the Diamondback terrapin(PRJNA339452) in FASTA format used to determine rDNA unit size for the Diamondback terrapin.Con_reads files contain raw nanopore reads individual rDNA unit sequences were extracted from to generate the consensus sequence in FASTA format.Con_indiv_units files contain individual rDNA unit sequences extracted from PacBio contigs used to generate the consensus sequence in FASTA format.Consensus_alignment files contains the alignement output in .geneious format.Annotated_Consensus files contains the two annotated consensus sequences in .geneious format.align_Diamondback_terrapin_con_with_ref file contains the rDNA consensus sequence aligned to a reference sequence (Genbank accession X02995).Average rDNA unit size was generated using the included excel spreadsheet.