Published online by Cambridge University Press: 14 July 2015
Sawfishes of the family Pristidae comprise a group of rays having dorsoventrally flattened, sharklike bodies and elongated rostra bearing a row of teeth on each side. Some species may attain total body lengths (TL) of 7 m or more (Compagno and Last, 1999). Unlike the similarly-shaped sawsharks of the family Pristiophoridae, the number of rostral teeth and their proportions are established in utero and maintained into adulthood (Slaughter and Springer, 1968; Miller, 1974), and if a tooth is lost the alveolus remains empty. In addition, the gills are located on the underside of the body and there are no rostral barbels (Tricas et al., 1997; Compagno and Last, 1999). Recent Pristidae consists of five to seven species (depending on synonymy) within two genera, Pristis (Linck, 1790) and Anoxypristis (White and Moy-Thomas, 1941).