See text Fustiaria is a genus of scaphopods in the order Dentaliida and is the only genus comprising the family Fustiariidae, with 24 species.

[4] The shells of Fustiaria are characterized as smooth, slender, circular in cross section, slightly curved, thin-walled, and virtually transparent.

The central tooth of its radula (chewing organ), called a "rachis", is unusual compared with that of other Dentaliids in that it is flat on its tip rather than pointed.

The space around the foot (the "pedal sinus") is divided by a thin horizontal membrane called a septum.

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