All the extant Tryblidiida belong to this family. Their shells are small, ovate, rounded, bilateral, thin, with at least some radial sculpture. Apex anteriorly placed.
 

« The shell has an apex which protrudes beyond the anterior shell margin and is sculptured by coarse concentric ribs which give an impression of reticulation. » – Warén & Gofas: “A new species of Monoplacophora, redescription of the genera Veleropilina and Rokopella, and new information on three species of the class”, Zoologica Scripta 25(3), july 2005, p.217.