| Reference no. | Description | year | Name used | Page |
|---|---|---|---|---|
| 833 | Ruppert, E.E., R.S. Fox and R.D. Barnes 2004 Invertebrate Zoology. A functional evolutionary approach. 7th Ed. Brooks/Cole, Thomson Learning learning, Inc. 990 p. | 2004 | Hexaplex duplex | --> |
| 109255 | Carpenter, K.E. and N. De Angelis (eds.) 2016 The living marine resources of the Eastern Central Atlantic. Vol. 2: Bivalves, gastropods, hagfishes, sharks, batoid fishes, and chimaeras. FAO Species Identification Guide for Fishery Purposes, Rome, FAO. pp. 665-1509. | 2016 | Hexaplex duplex | 1055 |
| 126039 | Paulay, G. 2022 Reproduction of Neogastropoda. Pers. Comm. via email [13/04/2022]. | 2022 | Hexaplex duplex | --> |
| 3477 | MarineSpecies.org 2050 MarineSpecies.org. http://www.marinespecies.org/index.php | 2050 | Hexaplex duplex | --> |
| 3477 | MarineSpecies.org 2050 MarineSpecies.org. http://www.marinespecies.org/index.php | 2050 | Purpura duplex | --> |