Wikipedia
Gradiconus
Gradiconus is a synonym of a subgenus of sea snails, marine gastropod mollusks in the genus Conus, family Conidae, the cone snails and their allies. T
In the new classification of the family Conidae by Puillandre N., Duda T.F., Meyer C., Olivera B.M. & Bouchet P. (2015), Gradiconus has become a subgenus of Conus: Conus (Dauciconus) Cotton, 1945 (type species: Conus gradatus W. Wood, 1828) represented as Conus Thiele, 1929