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Until fairly recently, over 600 species of cone snails were all classified under one genus, Conus, in one family, the Conidae. However, in recent years, it was suggested that cone snails should occupy only a subfamily that should be split into a very large number of genera. A 2014 paper attempted to stabilize a newer classification of the group, significantly reducing the number of new genera but keeping a fairly large number of subgenera. Although the taxonomy has changed significantly several times during recent years, in the current (2015) version of the taxonomy of these snails and their close relatives, cone snails once again compose the entire family Conidae.

Geologically speaking, fossils of cone snails are known from the Eocene to the Holocene epochs.[2] Cone snail species have shells that are shaped more or less like geometric cones. Many species have colorful patterning on the shell surface.[3] Cone snails are almost all tropical in distribution.

Credits : Wikipedia