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Hancock's organ

Sensory organ of gastropods From Wikipedia, the free encyclopedia

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]

A microphoto of Hancock's organ (ho) of a sea slug Pseudunela marteli.
A microphoto of head region of Pseudunela marteli shows position of Hancock's organ (ho) near eye (ey) and rhinophore (rh).

A great majority of the bubble shells and sea slugs of the orders Acteonoidea and Cephalaspidea have Hancock’s organs.

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