Family Fissurellidae Fleming 1822 (snail)
Synonyms: Clypidinidae Golikov and Starobogtov 1989, Rimulidae Anton 1838, Zeidoridae Naef 1913
Parent taxon: Fissurelloidea according to P. Bouchet et al. 2005
Sister taxa: none
Subtaxa: Altrix, Austriacopsis, Emarginulinae, Fissurellinae, Hemitoma, Leurolepas, Lucapina, Lucapinella, Nesta, Parmophorus, Puncturella, Subemarginula, Zeidora
Ecology: facultatively mobile epifaunal grazer