Belongs within: Euopisthobranchia.
The Diaphanidae are a group of thin-shelled bubble snails lacking mantle parapodia, jaws or gizzard plates. The shell is transparent in life, less than five millimetres long, and has a truncate spire.
<==DiaphanidaeBR05 |--BogasoniaJ96 |--RhinodiaphanaJ96 |--Brocktonia Iredale 1915O27 | `--B. polystrigma Dall 1908O27 |--Austrodiaphana Pilsbry 1896P61, BR05 [Austrodiaphanidae] | |--*A. brazieri (Angas 1877)BR17 [=Diaphana brazieriBR17, Aplustrum brazieriP61] | |--A. colei Fleming 1848P61 | `--A. maunganuica Powell 1952P61 `--Diaphana Brown 1827 [incl. Amphisphyra Lovén 1846; Amphisphyradae, Amphisphyridae, Diaphaninae]BR05 |--*D. candida Brown 1827BR17 |--D. brunnea Dall 1919O27 |--D. californica Dall 1919O27 |--D. globosa Loven 1846O27 |--D. minuta Brown 1827O27, J96 |--D. moloti (Cossmann 1907)TTE93 |--D. pellucida Brown 1827 [=*Amphisphyra pellucida]BR17 `--D. truncataTTE93
*Type species of generic name indicated
References
[BR05] Bouchet, P., & J.-P. Rocroi. 2005. Classification and nomenclator of gastropod families. Malacologia 47 (1–2): 1–397.
[BR17] Bouchet, P., J.-P. Rocroi, B. Hausdorf, A. Kaim, Y. Kano, A. Nützel, P. Parkhaev, M. Schrödl & E. E. Strong. 2017. Revised classification, nomenclator and typification of gastropod and monoplacophoran families. Malacologia 61 (1–2): 1–526.
[J96] Jensen, K. R. 1996. The Diaphanidae as a possible sister group of the Sacoglossa (Gastropoda, Opisthobranchia). In: Taylor, J. D. (ed.) Origin and Evolutionary Radiation of the Mollusca pp. 231–247. Oxford University Press: Oxford.
[O27] Oldroyd, I. S. 1927. The Marine Shells of the West Coast of North America vol. 2 pt 1. Stanford University Press: Stanford University (California).
[P61] Powell, A. W. B. 1961. Shells of New Zealand: An illustrated handbook 4th ed. Whitcombe and Tombs Limited: Christchurch.
[TTE93] Tracey, S., J. A. Todd & D. H. Erwin. 1993. Mollusca: Gastropoda. In: Benton, M. J. (ed.) The Fossil Record 2 pp. 131–167. Chapman & Hall: London.