FIGURE 3 in A new subfamily, Styracurinae, and new genus, Styracura, for Himantura schmardae (Werner, 1904) and Himantura pacifica (Beebe & Tee-Van, 1941) (Chondrichthyes: Myliobatiformes)

FIGURE 3. SEM images of dermal denticles of Styracura schmardae (MZUSP uncat. 508 mm DW). A) Quadriradiate denticles with broad basal plates (note overlapping basal plates); B) Quadriradiate and asterisk-shaped denticles occurring sideby-side on lateral disc region; C) Large quadriradiate denticle under greater magnification; D) Enlarged view of asterisk-shaped denticle showing stellate crown ridges. Abbreviations: bp, basal plate; cp, coronal plate; cr, coronal ridges; dr; dichotomous coronal ridge.