The Collaborative International Dictionary of English v.0.48:

Carchariidae \Carchariidae\ prop. n.
   a natural family comprising the sand sharks; in some
   classifications coextensive with the family Carcharhinidae.

   Syn: family Carchariidae, Odontaspididae, family
        Odontaspididae.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Carchariidae
    n 1: sand sharks; in some classifications coextensive with
         family Carcharhinidae [syn: Carchariidae, family
         Carchariidae, Odontaspididae, family Odontaspididae]