In this article published in 2016 in Malacologia, the mentions highlighted in orange are only cited as authorship and yet listed under the references section; the references in yellow are unambiguous bibliographic references (as they also are followed by a page number for instance), thus they are listed under the references section; the blue references should have been listed in the bibliography list but are not (Waite and Allmon 2016, cited in Bénichou et al. (2018)).