“…According to their fossil record, these coleoids inhabited surface to deep waters of epicontinental domains, and were present at worldwide scale, both in the subtropical and polar areas (Stevens, 1963(Stevens, , 1965(Stevens, , 1971Stevens and Clayton, 1971;Christensen, 1976;Doyle, 1987Doyle, , 1994Doyle et al, 1997;Christensen, 2002). In agreement with the regional distribution and the palaeoenvironmental differences in the taxonomic composition of most belemnite communities (Mutterlose and Wiedenroth, 1998;Mariotti et al, 2012;Weis et al, 2012), recent geochemical analyses of rostra indicate that different species might have had different ecological preferences in term of life depth, seawater temperature, or salinity (Dutton et al, 2007;McArthur et al, 2007;Dera et al, 2009;Rexford and Mutterlose, 2009;Mutterlose et al, 2010;Wierzbowski and Rogov, 2011;Li et al, 2012;Harazim et al, 2013;Stevens et al, 2014;Wierzbowski, 2015). Nevertheless, some eurytopic taxa likely migrated over several hundreds of kilometers and different depths during their lifetime (Christensen, 1997;Zakharov et al, 2006;Alsen and Mutterlose, 2009;Sørensen et al, 2015).…”