Fig. 11 in Systematic revision of the Potamotrygon motoro (Müller & Henle, 1841) species complex in the Paraná-Paraguay basin, with description of two new ocellated species (Chondrichthyes: Myliobatiformes: Potamotrygonidae)

Fig. 11. Potamotrygon motoro. Details of dermal denticles in an adult female, MZUSP 110902. Morphology and concentration of dermal denticles on dorsal disc in (a) and (b), a typical star-shaped denticle in (c) showing the crown with its central plate and dichotomous ridges, and in (d) trichotomous denticles present in spiracular openings.