Rhizoprionodon oligolinx SPRINGER, 1964
Description after Springer, 1964 [#2274]: Cusps of teeth smooth to faintly irregular; posterior margins sometimes denticulate; anterior teeth of lower jaw of mature males distinct from those of females and young males (fig. 13); in mature males the cusps of the anterior teeth of the lower jaw (and sometimes upper) are slenderer and rounder in cross section than in females and young males. This situation is somewhat analogous, but less striking than that found in Scoliodon. Denticles imbricate, 3-ridged and 3-toothed in young, 3- to 5- ridged and 3- to 5-toothed or irregularly margined in adults.
