Fig. 14 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. 14. Potamotrygon motoro. Neurocranium of an adult male specimen, MZUSP 111905, 310 mm DW, in (a) dorsal, (b) ventral, (c) lateral and (d) posterior views. Abbreviations: ACVF, anterior cerebral vein foramen; AFP I and II, anterior foramen of preorbital canal I and II; AOC, antorbital cartilage condyle; AS, articular surface; ELF, endolymphatic foramen; EPB, epiphysial bar; ESAF, efferent spiracular artery foramen; FPF, frontoparietal fontanelle; FM, foramen magnum; HF, hyomandibular facet; ICAF, internal carotid artery foramen; NA, nasal aperture; NC, nasal capsule; OC, occipital condyle; OF, orbital fissure; PCF, precerebral fontanelle; PFP I and II, posterior foramen of preorbital canal I and II; PFL, perilymphatic foramen; POP, postorbital process; PRP, preorbital process; SOC, supraorbital crest; SP, supraorbital process; II, optic nerve foramen; IV, trochlear nerve foramen; VII, facial nerve foramen; X, vagus nerve foramen.