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Order: Retrovirales (Ortervirales)

Order: Blubervirales
non-LTR Retrotransposons *
  • LINE-1: Long interspersed nuclear elements-1
      • imageimageimageimageimage L1 type
  • (LINE-2: Long interspersed nuclear elements-1)**
  • (LINE-3: Long interspersed nuclear elements-1)**
  • SINE-1: Short interspersed nuclear elements-1***
      • imageimageAlu, B1 types
      • imageimageB2 types
  • imageimage prokaryotic retrons

    * Elements not classified as viruses
    ** Genomic fossils
    *** Presumably of cellular origin

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