Plesiotrygon iwamae, a new genus and species of neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae). Copeia, 1987(2), 447–458
Contribución al conocimiento sistemático y biológico de Zapteryx brevirostris (Müller & Henle, 1841) de la costa atlántica marplatense (Chondrichthyes, Rhinobatidae). Physis, 80, 619–629
Potamotrygon leopoldi, a new species of freshwater sting-ray for the Xingú River, Brazil (Chondrichthyes, Potamotrygonidae). Acta Scientifica, Universidad del Salvador, 10, 1–16
Potamotrygon yepezi, n. sp. (Condrichthyes, (sic) Potamotrygonidae), a new species of freshwater sting-ray from Venezuelan rivers. Acta Scientifica, Universidad del Salvador, 8, 15–39
Potamotrygon castexi (Condrichthyes, Potamotrygonidae), a new species of freshwater sting-ray for the Paraná River. Acta Scientifica, Universidad del Salvador, 6, 1–21, 1 pl.
