| Ref. No. | Title |
|---|---|
| 39984 | A systematic revision of the South American freshwater stingrays (Chondrichthyes: Potamotrygonidae). |
| 39985 | Further comment on the nomenclature of the freshwater stingray Elipesurus spinicauda Schomburgk, 1843 (Chondrichthyes, Potamotrygonidae). |