Gavialidae is a family of reptiles within the order Crocodilia. Gavialidae has conventionally consisted of only one surviving species, the gharial (Gavialis gangeticus), which is native to India. Many extinct species are also known. The false gharial (Tomistoma schlegelii) has usually been thought to be a member of the family Crocodylidae based on... Found on http://en.wikipedia.org/wiki/Gavialidae
(from the article `crocodile`) ...crocodiles)Three genera and 13 species; teeth of upper and lower jaws form one interdigitating row when mouth is closed.Family Gavialidae ... Found on http://www.britannica.com/eb/a-z/g/14