Calliostoma Swainson, 1840

Hoffman, Leon, Beuck, Lydia, Heugten, Bart Van, Lavaleye, Marc & Freiwald, André, 2019, Last snails standing since the Early Pleistocene, a tale of Calliostomatidae (Gastropoda) living in deep-water coral habitats in the north-eastern Atlantic, Zootaxa 4613 (1), pp. 93-110 : 96

Genus Calliostoma Swainson, 1840

Type species. Trochus conulus Linnaeus, 1758 now accepted as Calliostoma conulus ( Linnaeus, 1758) .

Comments. Most species in Calliostoma are carnivore ( Fretter & Graham 1977; Perron & Turner 1978; Quinn 1981; Ferro & Cretella 1993; Marshall 1995a, b; Harasewych & Sedberry 2006; Williams et al. 2010; Dornellas & Simone 2011; de Bruyne et al. 2013). Calliostoma zizyphinum ( Linnaeus, 1758) from the continental slopes of the NE Atlantic and the Mediterranean Sea also feeds on plant material as a minor part of its diet ( Fretter & Graham 1977; de Bruyne et al. 2013).

This paper concentrates on three species that have been commonly recorded from framework-building DWC habitats in the NE Atlantic during our studies: Calliostoma bullatum ( Philippi, 1844) , C. maurolici ( Seguenza, 1876) and C. leptophyma Dautzenberg & Fischer, 1896 . Other species have been reported from DWC locations in the NE Atlantic but they are not discussed here because they have not, or only scarcely, been encountered in our study areas: C. caroli Dautzenberg 1927 , C. cleopatra ( Locard, 1898) , C. granulatum ( Born, 1778) , C. grimaldii Dautzenberg & H. Fischer, 1896 , C. hirondellei Dautzenberg & H. Fischer, 1896 , C. lividum Dautzenberg 1927 , C. normani (Dautzenberg & H. Fischer, 1897) and C. occidentale (Mighels & C. B. Adams, 1842) .