Plesiotrygon iwamae (63)
Rosa, Castello & Thorson, 1987
Common name: Long-tailed river stingray
Original description species: Rosa, Castello & Thorson, 1987
Genus: Plesiotrygon Rosa, Castello & Thorson, 1987
Family: Potamotrygonidae Garman, 1877
Order: Myliobatiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii
Plesiotrygon nana (16)
Carvalho & Ragno, 2011
Original description species: Carvalho & Ragno, 2011
Genus: Plesiotrygon Rosa, Castello & Thorson, 1987
Family: Potamotrygonidae Garman, 1877
Order: Myliobatiformes
Superorder: Batomorphii
Subcohort: Neoselachii
Cohort: Euselachii
Subclass: Elasmobranchii