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Notodiaphana fragilis is the only species in the genus Notodiaphana.[citation needed] Genus Notodiaphana is the only genus in the family Notodiaphanidae.[3]
The little-known species have small, flimsy, almost globular shells, known as paper bubble shells.
The shell is minute, thin, fragile, colorless to translucent, and usually less than 5 mm in size. The overall shape is ovate, pear-shaped, and bulbous. There is a sunken apex.[citation needed]
^Thiele J. (1917). Nachrbl. dtsch. malakozool. Ges.49: 23.
^Thiele J. (1931). Handbuch der systematischen Weichtierkunde1(2): 383.
^ abMalaquias M. A. E., Dodds J. M., Bouchet P. & Reid D. G. (2009). "A molecular phylogeny of the Cephalaspidea sensu lato (Gastropoda: Euthyneura): Architectibranchia redefined and Runcinacea reinstated". Zoologica Scripta38(1): 23-41. doi:10.1111/j.1463-6409.2008.00354.x.
