| Reference no. | Rice, D.W., 1998 |
| Ecosystem | Rio de la Plata |
| Status | native |
| Abundance | |
| Lifestage | adults |
| Regional database | |
| Remarks | Previous occurrence from map (Ref. 1394, p. 175) is confirmed by Ref. 1522. Reported as Cephalorhynchus commersonii commersonii in Rio Negro and vagrant north to Buenos Aires (Ref. 1522). |