[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Phylum Mollusca Linnaeus, 1758 - molluscs
     Class Gastropoda Cuvier, 1795 - snails and slugs
       Family Buccinidae Rafinesque, 1815 - whelks
         Genus Colus Röding, 1798
           Colus altus (S. Wood, 1848)
           Colus frielei (Kantor, 1981)
           Colus glaber (Kobelt, 1876)
           Colus gracilis (da Costa, 1778) - simple colus
           Colus holboelli (Møller, 1842)
           Colus howsei (Marshall, 1902)
           Colus islandicus (Mohr, 1786) - Iceland whelk
           Colus jeffreysianus (P. Fischer, 1868) - Jeffrey's colus
           Colus kroeyeri (Møller, 1842)
           Colus latericeus (Møller, 1842)
           Colus sabini (J.E. Gray, 1824)
           Colus turgidulus (Friele, 1877)
           Colus verkruezeni (Kobelt, 1876)