| Citation | Rice, D.W., 1998 Marine Mammals of the World Systematics and Distribution. Special Publication number 4: The Society for Marine Mammalogy. 231p. |
| Ref. | 1522 Rice, D.W., 1998 |
| Page | 145 |
| Named Used as Valid | Pteronura brasiliensis paranensis |
| Locality | |
| Distribution | Drainages of the Río Paraná and the Río Uruguay in Paraguay, southern Brazil, northeastern Argentina, and Uruguay. |