|  |  |  | ||||
|---|---|---|---|---|---|---|
|   |   |   |   |   |   |   | 

Caution: This not an official Baltimore classification, because it describes mostly viroids that are not viruses (they don't encode for any protein).
|  |  |  |  | 
| Family/genus | Type | Min length | Max length | 
| Deltavirus | Circular | 1,614 b | 1,697 b | 
| Avsunviroidae | Circular | 240 b | 340 b | 
| Pospiviroidae | Circular | 240 b | 400 b | 
