Potamotrygon pantanensis Loboda & Carvalho, 2013

Holotype: MZUSP 110890; adult female, 318 mm DW (approximately the same DW as cited in Loboda & Carvalho, 2013) (Fig. 15); Baia Sinhá Mariana, tributary of Rio Cuiabá, Barão de Melgaço, Mato Grosso State, Brazil; depth not listed; W. J. da Graça; 24 Apr 2000.

Notes: Digestive tract removed. Puboischiadic bar sectioned medially and right ventral disc border with mild skin damage (still attached to specimen).

Paratypes: MZUSP 110874; one adult female, 302 mm DW (approximately the same DW as cited in Loboda & Carvalho, 2013); Rio Cuiabá, Rosário Oeste, Mato Grosso State, Brazil; depth not listed; W. J. da Graça; 24 Apr 2000 .

Notes: Digestive tract removed. Lower jaw sectioned on lateral edges. Specimen dissected on the neurocranium region.

MZUSP 110888; one adult female, 349 mm DW (cited as 336 mm DW in Loboda & Carvalho, 2013); Baia Sinhá Mariana, tributary of Rio Cuiabá, Bar ã o de Melgaço, Mato Grosso State, Brazil; depth not listed; W. J. da Graça; 24 Apr 2000 .

Notes: Digestive tract removed. Puboischiadic bar sectioned medially. Tail broken. Skin patch removed for SEM. Caudal stinger removed.

MZUSP 110889; one adult female, 326 mm DW (approximately the same DW as cited in Loboda & Carvalho, 2013); Baia Sinhá Mariana, tributary of Rio Cuiabá, Bar ã o de Melgaço, Mato Grosso State, Brazil; depth not listed; W. J. da Graça; Collection date: 24 Apr 2000 .

Notes: Digestive tract removed. Caudal stinger removed.

MZUSP 110891; one adult male, 270 mm DW (approximately the same DW as cited in Loboda & Carvalho, 2013); Baia Sinhá Mariana, tributary of Rio Cuiabá, Bar ã o de Melgaço, Mato Grosso State, Brazil; depth not listed; W. J. da Graça; 24 Apr 2000 .

Notes: Tail removed.

MZUSP 110892; one adult female, 298 mm DW (approximately the same DW as cited in Loboda & Carvalho, 2013); Baia Sinhá Mariana, tributary of Rio Cuiabá, Bar ã o de Melgaço, Mato Grosso State, Brazil; depth not listed; W. J. da Graça; 24 Apr 2000 .

Notes: Digestive tract removed. Skin patch removed for SEM. Caudal sting removed.

MZUSP 110894; one adult female, 317 mm DW; Baia Sinhá Mariana, tributary of Rio Cuiabá, Bar ã o de Melgaço, Mato Grosso State, Brazil; depth not listed; W. J. da Graça; 24 Apr 2000 .

Notes: Specimen not located.

MZUSP 110901; one adult female, 303 mm DW (approximately the same DW as cited in Loboda & Carvalho, 2013); Rio Cuiabá, Rosário Oeste, Mato Grosso State, Brazil; depth not listed; W. J. da Graça; 24 Apr 2000 .

Notes: Digestive tract removed. Tip of tail damaged.