Type specimens of Elasmobranchii in the Museu de Zoologia da Universidade de São Paulo (MZUSP) Lima, Arthur De Loboda, Thiago Silva Gianeti, Michel Donato Silva, João Paulo Capretz Batista Da Pinna, Mario De Zootaxa 2023 2023-05-29 5296 3 301 332 4M4QF 2803078 Fontenelle & Carvalho, 2017 Fontenelle & Carvalho 2017 [151,807,1338,1365] Elasmobranchii Potamotrygonidae Potamotrygon Animalia Myliobatiformes 13 314 Chordata species amazona     Holotype: MZUSP 117344; adult male, 518 mmDW (cited as 532 mmin Fontenelle & Carvalho, 2017) ( Fig. 11); Rio Jutaí, municipal district of Boca do Titica, upper Rio Amazonas, Amazonasstate, Brazil, 2º55’24.8’’S, 66º57’07.6’’W; depth not listed; F. Marques et al.;  24 Sep 2012.  Notes:Skin patches removed on ventral surface, with a cut on the right portion of abdomen. Field no. JU12- 10.    Paratypes: MZUSP 117346: JU12-12; one adultfemale, 402 mmDW (approximately the same DW as cited in Fontenelle & Carvalho, 2017); Rio Jutaí, municipal district of Boca do Titica, upper Rio Amazonas, Amazonasstate, Brazil, 2º55’24.8’’S, 66º57’07.6’’W; depth not listed; F. Marques et al.;  25 Sept 2012.  Notes:Skin samples close to eyes removed for SEM. Skin partially removed on ventral surface.   MZUSP 117348: JU12-19; one adultmale, 495 mmDW (approximately the same DW as cited in Fontenelle & Carvalho, 2017); Rio Jutaí, municipal district of Boca do Titica, upper Rio Amazonas, Amazonasstate, Brazil, 2º55’24.8’’S, 66º57’07.6’’W; depth not listed; F. Marques et al.;  25 Sep 2012.  Notes:Cut on right portion of abdomen. 4120745307 2012-09-24 MZUSP F. Marques Brazil Amazonas -2.9235556 Rio Jutai 1 -66.95211 upper Rio Amazonas 13 314 MZUSP 117344 1 holotype 4120745428 2012-09-25 MZUSP F. Marques Brazil Amazonas -2.9235556 Rio Jutai 1 -66.95211 upper Rio Amazonas 13 314 MZUSP 117346 1 1 paratype 4120745397 2012-09-25 MZUSP F. Marques Brazil Amazonas -2.9235556 Rio Jutai 1 -66.95211 upper Rio Amazonas 13 314 MZUSP 117348 1 1