Chondrichthyes families

thumb|A Chimaeridae fish and Bathymodiolus childressi|deepwater mussels at edge of a [[brine pool.]]

The Rhinochimaeridae, commonly known as long-nosed chimaeras, are a family of cartilaginous fish. They are similar in form and habits to other chimaeras, but have an exceptionally long conical or paddle-shaped snout. The snout has numerous sensory nerve endings, and is used to find food such as small fish. The first dorsal fin includes a mildly venomous spine, used in defense.

REDIRECT Callorhinchus

Trygonorrhinidae, the banjo rays, is a family of rays, comprising eight species in three genera. They were formerly classified in the family Rhinobatidae.