Petitilla is a genus of sea snails, marine gastropod mollusks in the family Pyramidellidae, the pyrams and their allies.WoRMS (2010). Petitilla Wise, 1997. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=415798 on 2011-10-26
Species Species within the genus Petitilla include: Petitilla crosseana (Dall, 1885)
References
Wise, J. B. 1997. Petitilla, new name for Petitella Wise,1996, a preoccupied name (Mollusca: Gastropoda: Pyramidellidae).The Nautilus 110(2): 76.
External links ITIS World Register of Marine Species