The Semper's organ is an anatomical structure, a gland located in the head of some land snails, pulmonate gastropod mollusks.Lane J. N. (1964) "Semper's Organ, a Cephalic Gland in Certain Gastropods". Quarterly Journal of Microscopical Science 105(3): 331-342.
This organ was named after the German zoologist Carl Gottfried Semper, who first published information about this anatomical structure in 1856.Semper C. (1856) Z. wiss. Zool., 8, 366.
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