Class I TE Nomenclature
| Class (mode of transporation) | Group IN/RT order | Subgroup RT phylogeny | Genus >∼50% RT amino acid ID | Superfamily >∼75% RT amino acid ID | Family >∼90% RT amino acid ID | Individual element |
| I (RNA) | I (RT/IN)Gypsy–Ty3 | A | Pao | Pao | ||
| BEL | Bel | |||||
| Tas | Tas | |||||
| Cer7 | Cer7.0 | |||||
| Cer8 | Cer8 | Cer8 | Cer8.0 | |||
| Cer9 | Cer9.0 | |||||
| Cer10 | Cer10 | Cer10 | Cer10.0 | |||
| Cer10.1 | ||||||
| Cer11 | Cer11 | Cer11 | Cer11 | |||
| Cer12 | Cer12 | Cer12 | ||||
| B | dirs-1 | dirs-1 | dirs-1 | dirs-1 | ||
| PAT | PAT | PAT | PAT | |||
| C | gypsy | gypsy | ||||
| Ty3 | Ty3 | |||||
| Cer1 | Cer1 | Cer1 | Cer1 | |||
| Cer1.1 | ||||||
| Cer2 | Cer2 | Cer2 | Cer2 | |||
| Cer3 | Cer3 | |||||
| Mag | Mag | Mag | Mag | |||
| Cer4 | Cer4 | Cer4 | Cer4 | |||
| Cer5 | Cer5 | Cer5 | Cer5 | |||
| Cer5.1 | ||||||
| Cer6 | Cer6 | Cer6 | Cer6 | |||
| Cer6.1 | ||||||
| D (vertebrate | Lenti | |||||
| retrovirus) | B-type | |||||
| Spuma | ||||||
| MLV | ||||||
| Fish | ||||||
| D-type | ||||||
| ASLV | ||||||
| BLV–HTLV | ||||||
| II (IN/RT)Copia–Ty1 | Ty1 | Ty1 | ||||
| Copia | Copia | |||||
| III (Non-LTR) |