Table 1. Main structural features of the six newly sequenced mt genomes in this study.
| Moerella iridescens | Sanguinolaria diphos | Sanguinolaria olivacea | Semele scaba | Sinonovacula constricta | Solecurtus divaricatus | |
| Total size | 16799 | 16352 | 18182 | 17117 | 17224 | 16749 |
| A+T % | 65.72 | 63.36 | 65.27 | 59.19 | 67.08 | 60.15 |
| rrnS | 863 | 876 | 949 | 861 | 909 | 887 |
| rrnL | 1268 | 1343 | 1346 | 1330 | 1228 | 1380 |
| No. of tRNA | 22 | 21 | 21 | 20 | 22 | 22 |
| No. of gene overlapping | 3 | 6 | 9 | 2 | 2 | 4 |
| Size range of gene overlapping | 1 | 1 to 44 | 1 to 44 | 1 to 20 | 1 to 3 | 1 |
| cox1 | 1671 | 1755 | 1758 | 1692 | 1692 | 1725 |
| (ATA/TAA) | (ATA/TAG) | (ATA/TAA) | (ATG/TAA) | (ATT/TAA) | (ATA/TAG) | |
| cox2 | 861 | 873 | 858 | 1206 | 843 | 867 |
| (ATG/TAG) | (ATG/TAG) | (ATG/TAA) | (ATG/TAG) | (ATG/TAG) | (ATG/TAA) | |
| cox3 | 867 | 936 | 936 | 894 | 804 | 894 |
| (ATA/TAA) | (ATG/TAG) | (ATA/TAG) | (ATG/TAG) | (ATG/TAG) | (ATG/TAG) | |
| nad1 | 924 | 924 | 939 | 921 | 930 | 927 |
| (GTG/TAG) | (ATT/TAG) | (ATA/TAA) | (ATG/TAG) | (ATA/TAG) | (ATA/TAA) | |
| nad2 | 1014 | 1071 | 1077 | 1056 | 1056 | 1062 |
| (ATA/TAA) | (ATG/TAG) | (ATG/TAA) | (TTG/TAA) | (ATG/TAG) | (ATG/TAG) | |
| nad3 | 360 | 363 | 378 | 360 | 366 | 360 |
| (ATT/TAA) | (ATT/TAA) | (ATG/TAG) | (ATA/TAG) | (ATG/TAG) | (ATG/TAA) | |
| nad4 | 1335 | 1303 | 1362 | 1365 | 1392 | 1347 |
| (ATA/TAG) | (ATA/T) | (ATA/TAA) | (GTG/TAG) | (ATG/TAA) | (TTG/TAG) | |
| nad4L | 291 | 315 | 312 | 291 | 288 | 291 |
| (ATG/TAG) | (ATG/TAA) | (ATG/TAA) | (GTG/TAA) | (ATG/TAA) | (GTG/TAG) | |
| nad5 | 1746 | 1788 | 1800 | 1737 | 1761 | 1734 |
| (TTG/TAA) | (ATA/TAA) | (ATT/TAG) | (ATG/TAA) | (ATT/TAA) | (ATG/TAG) | |
| nad6 | 537 | 567 | 555 | 633 | 531 | 567 |
| (ATT/TAA) | (ATA/TAG) | (ATA/TAG) | (ATA/TAA) | (ATG/TAG) | (ATA/TAG) | |
| cob | 1233 | 1233 | 1242 | 1176 | 1146 | 1248 |
| (ATA/TAA) | (ATG/TAG) | (ATG/TAG) | (ATT/TAG) | (ATG/TAA) | (GTG/TAA) | |
| atp6 | 777 | 720 | 687 | 711 | 702 | 846 |
| (ATG/TAA) | (ATA/TAG) | (ATG/TAA) | (ATG/TAA) | (ATA/TAG) | (ATG/TAA) |
For each, total size of the mt genome, the percent of overall A+T content, size of rrnS and rrnL, number of tRNA, number of gene overlapping and its size range, and size of the protein coding genes (start and stop codons in parentheses) are presented. Gene lengths are in bp.