| Ref. No. | Title |
|---|---|
| 86906 | An unusual, dwarf new species of neotropical freshwater stingray, Plesiotrygon nana sp. Nov., from the upper and mid Amazon Basins: the second species of Plesiotrygon (Chondrichthyes: Potamotrygonidae). |
| 86912 | An unusual, dwarf species of neotropical freshwater stingray, Plesiotrygon nana sp. nov., from the upper and mid Amazon basin: the second species of Plesiotrygon (Chondrichthyes: Potamotrygonidae). |