Hancock's organ is a lateral concealed sensory organ of gastropods,[1] a chemo-sensory sense organ found in some sea snails.[2] This organ is found in most of the shelled opisthobranchs.[2]
![](http://upload.wikimedia.org/wikipedia/commons/thumb/7/7c/Pseudunela_marteli_4.png/220px-Pseudunela_marteli_4.png)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Pseudunela_marteli_3.png/220px-Pseudunela_marteli_3.png)
A great majority of the bubble shells and sea slugs of the orders Acteonoidea and Cephalaspidea have Hancock’s organs.
References
edit- ^ Hancock, A., (1852). Observations on the Olfactory Apparatus in the Bullidae. The Annals and Magazine of Natural History Vol.IX – Series 2 188-190.
- ^ a b Schrödl M. & Neusser T. P. (2010). "Towards a phylogeny and evolution of Acochlidia (Mollusca: Gastropoda: Opisthobranchia)". Zoological Journal of the Linnean Society 158: 124-154. doi:10.1111/j.1096-3642.2009.00544.x.