1a. Head shovel-shaped and narrow, its width usually less than 3 times the preoral length (Fig. 1); posterior teeth formed as broad, keeled, molariform crushers . . . . . . . . . . Sphyrna tiburo
1a. Head shovel-shaped and narrow, its width usually less than 3 times the preoral length (Fig.1); posterior teeth formed as broad, keeled, molariform crushers . . . . . . . . . . Sphyrna tiburo
1a. Head shovel-shaped and Narrow, ITS Less than 3 times the width usually Preoral Length (Fig. 1); posterior teeth formed as broad, keeled, molariform crushers. . . . . . . . . . Sphyrna tiburo
1A. Head shovel-shaped and narrow its width, usually less than 3 times the preoral length (Fig.1); posterior teeth formed as, molariform keeled broad, crushers...... Sphyrna tiburo.