Potamotrygon amandae Loboda & Carvalho, 2013 Holotype: MZUSP 110910; adult female, 351 mm DW (cited as 341 mm DW in Loboda & Carvalho, 2013); (Fig. 10); Rio Paraguai, municipality subdistrict of Albuquerque, municipality of Corumbá, Mato Grosso do Sul state, Brazil, 19º41’S, 57º38’W; depth not listed; F. P. Marques, L. Marques, F. Reyda & W. Santana; 11 Dec 2003. Notes: Cut on the right portion of the abdomen. Field no. BZ-07 [MS03]. Paratypes: MZUSP 110904: PR04-21; one adult male, 311 mm DW (approximately the same DW as cited in Loboda & Carvalho, 2013); Rio Paraná, municipality of Porto Primavera, S ã o Paulo state, Brazil, 22º47’S, 52º96’W; depth not listed; W. B. A. de Oliveira & G.C. Evangelista; 06 Apr 2004. Notes: Cut on the right portion of the abdomen. Skin patch removed for SEM. MZUSP 110906: BZ-03[MS03]; one adult female, 298 mm DW (approximately the same DW as cited in Loboda & Carvalho, 2013); Rio Paraguai, subdistrict of Albuquerque, municipality of Corumbá, Mato Grosso do Sul state, Brazil, 19º41’S, 57º38’W; depth not listed; F. P. L. Marques et al.; 08 Dec 2003. Notes: Cut on right portion of the abdomen. Skin patch removed for SEM. MZUSP 110907: BZ-04[MS03]; one adult female, 260 mm DW (cited as 270 mm DW in Loboda & Carvalho, 2013); Rio Paraguai, subdistrict of Albuquerque, municipality of Corumbá, Mato Grosso do Sul state, Brazil, 19º41’S, 57º38’W; depth not listed; F. P. L. Marques et al.; 08 Dec 2003. Notes: Digestive tract removed. Cut on right portion of the abdomen. Tail broken. Caudal stinger medially broken. Liver removed. MZUSP 110909: BZ-06[MS03]; adult female, 290 mm DW (same DW as cited in Loboda & Carvalho, 2013); Rio Paraguai, subdistrict of Albuquerque, municipality of Corumbá, Mato Grosso do Sul State, Brazil, 19º41’S, 57º38’W; depth not listed; F. P. L. Marques et al.; 10 Dec 2003. Notes: Digestive tract removed. Cut on right portion of abdomen region. Bite scar on right dorsal margin of disc. Skin patch removed for SEM. MZUSP 110913: BZ-11[MS03]; one adult female, 258 mm DW (approximately the same DW as cited in Loboda & Carvalho, 2013); Rio Paraguai, subdistrict of Albuquerque, municipality of Corumbá, Mato Grosso do Sul State, Brazil, 19º41’S, 57º38’W; depth not listed; F. P. L. Marques et al.; 12 Dec 2003. Notes: Digestive tract removed. Cut on right portion of abdomen. Slight circular damage on left portion of ventrolateral surface. MZUSP 111916: BZ-15[MS03]; one adult male, 262 mm DW (approximately the same DW as cited in Loboda & Carvalho, 2013); Rio Paraná, subdistrict of Jupiá, municipality of Três Lagoas, State of Mato Grosso do Sul, Brazil, 20º79’S, 51º65’W; depth not listed; F. P. L. Marques et al.; 15 Dec 2003. Notes: Cut on right portion of abdominal cavity. Small skin damage on the right dorsal disc. MZUSP 111917: BZ-17[MS03]; one juvenile male, 216 mm DW (approximately the same DW as cited in Loboda & Carvalho, 2013); Rio Paraná, subdistrict of Jupiá, municipality of Três Lagoas, Mato Grosso do Sul State, Brazil, 20º79’S, 51º65’W; depth not listed; F. P. L. Marques et al.; 15 Dec 2003. Notes: Digestive tract removed. Bite scar on posterior left margin of disc. Cut on upper left portion of disc. MZUSP 111919: BZ-35[MS03]; one adult female, 242 mm DW (cited as 236 mm DW in Loboda & Carvalho, 2013); Rio Paraná, subdistrict of Jupiá, municipality of Três Lagoas, Mato Grosso do Sul State, Brazil, 20º79’S, 51º65’W; depth not listed; F. P. L. Marques et al.; 16 Dec 2003. Notes: Longitudinal cut on dorsal pre-caudal region. Digestive tract removed. MZUSP 111920: BZ-37[MS03]; one adult male, 259 mm DW (approximately the same DW as cited in Loboda & Carvalho, 2013); Rio Paraná, subdistrict of Jupiá, municipality of Três Lagoas, Mato Grosso do Sul State, Brazil, 20º79’S, 51º65’W; depth not listed; F. P. L. Marques et al.; 17 Dec 2003. Notes: Four bite scars on the margin of the disc: two small ones anteriorly and posteriorly on the right side, and two large ones on left posterior portion. Cut on right portion of abdomen. MZUSP 111921: BZ-43[MS03]; one adult female, 309 mm DW (approximately the same DW as cited in Loboda & Carvalho, 2013); Rio Paraná, municipality Jupiá, municipality of Três Lagoas, Mato Grosso do Sul State, Brazil, 20º79’S, 51º65’W; depth not listed; F. P. L. Marques et al.; 17 Dec 2003. Notes: Cut on right portion of abdomen. Superficial damage on left posterodorsal surface. MZUSP 111923: BZ-51[MS03]; one juvenile female, 201 mm DW (approximately the same DW as cited in Loboda & Carvalho, 2013); Rio Paraná, subdistrict of Jupiá, municipality of Três Lagoas, Mato Grosso do Sul State, Brazil, 20º79’S, 51º65’W; depth not listed; F. P. L. Marques et al.; 16 Dec 2003. Notes: Digestive tract removed. Cut on the right portion of abdomen. MZUSP 111925: BZ-55[MS03]; one juvenile male, 200 mm DW (approximately the same DW as cited in Loboda & Carvalho, 2013); Rio Paraná, subdistrict of Jupiá, municipality of Três Lagoas, Mato Grosso do Sul State, Brazil, 20º79’S, 51º65’W; depth not listed; F. P. L. Marques et al.; 17 Dec 2003. Notes: Tip of the rostrum slightly damage. Tail broken. Incision on right portion of abdomen.

Published as part of Lima, Arthur De, Loboda, Thiago Silva, Gianeti, Michel Donato, Silva, João Paulo Capretz Batista Da & Pinna, Mario De, 2023, Type specimens of Elasmobranchii in the Museu de Zoologia da Universidade de São Paulo (MZUSP), pp. 301-332 in Zootaxa 5296 (3) on pages 313-314, DOI: 10.11646/zootaxa.5296.3.1, http://zenodo.org/record/7983829