Sphyrna Rafinesque, 1810
Greatest width of head far less than half of total body length. Jaws with or without labial furrows; nostrils much closer to eyes than to midline of snout; anterior margin of nostril expanded at inner end as a stiff, triangular flap, hollowed on lower side and overhanging the orifice.
Species 8; in Clofnam area 4
Species of this genus in the program:
Sphyrna lewini
Sphyrna mokarran
Sphyrna tudes
Sphyrna zygaena