Original: Gavialidae consists of only two surviving species, the gharial (Gavialis gangeticus) and the false gharial (Tomistoma schlegelii), which are each the sole living representatives of their genera.
Simplified: There are only two surviving species, the Gharial (Gavialis gangeticus) and the False Gharial (Tomistoma schlegelii), which are each the sole living representatives of the two Gavialidae genera.