Table 4. RNA sequence Ids (in RNA STRAND) and RNA family for subclasses with genus ≥2.
| Subclass | RNA sequence Ids | RNA family (Organism) |
| 2A | CRW_00467–469, CRW_00471, CRW_00472, CRW_00474–480, CRW_00482–492,CRW_00494–496, CRW_00498, CRW_00499, CRW_00501–503, CRW_00506–509,CRW_00511, CRW_00512, CRW_00515–518, CRW_00520, CRW_00521,CRW_00547, CRW_01456 | 23S Ribosomal RNA |
| 2B | PDB_00335, PDB_00714, PDB_00716, PDB_00764, PDB_00765 | Ribozyme (Hepatitis Delta Virus) |
| 2C | ASE_00194, ASE_00204 | Ribonuclease P RNA (Mycoplasma Pneumonia) |
| 2D | PDB_00187 | 23S Ribosomal RNA (Deinococcus Radiodurans) |
| 3A | CRW_00471–474, CRW_00476–492, CRW_00494–496, CRW_00498–503, CRW_00506–513, CRW_00515–518, CRW_00520, CRW_00522, CRW_00529, CRW_00544, CRW_00547, CRW_01456 | 23S Ribosomal RNA |
| 3B | CRW_00505, CRW_00523, CRW_00527, CRW_00528, CRW_00546 | 23S Ribosomal RNA |
| 3C | PDB_00447, PDB_00606, PDB_00628, PDB_00993, PDB_01184 | 23S Ribosomal RNA |
| 3D | CRW_00525 | 23S Ribosomal RNA (Giardia Intestinalis) |
| 4A | CRW_00001 | Group II Intron (Saccharomyces Cerevisiae) |
| 4B | CRW_00521 | 23S Ribosomal RNA (Euglena Gracilis) |
| 5A | CRW_00002, CRW_00575 | Group II Intron (Saccharomyces Cerevisiae) |
Consecutive sequence IDs are presented by a range, e.g. CRW_00501–503 represents IDs CRW_00501, CRW_00502 and CRW_00503. Organism names are also given if all molecules belong to a single organism.