We present a history of the various collections of pelagic, or holoplanktic Mollusca, available in the Naturalis Biodiversity Center, Leiden The Netherlands. Both for the fossil and present-day collections numbers of available lots, stratigraphic and geographic origin and availability of type specimens are documented. We discuss four issues related to these collections: 1) preservation of pyritised fossils, 2) the backgrounds of the Maltese fossil collection material, 3) a list of all 505 taxa considered valid, 216 of which are currently living species (many of which also have a fossil record) and 4) diagnosis of Vaginellinae subfamily nov.

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Basteria

CC BY-NC 4.0 NL ("Naamsvermelding-NietCommercieel")

Nederlandse Malacologische Vereniging

A.W. Janssen, A.N. van der Bijl, J. Goud, K.T.C.A. Peijnenburg, R. Pouwer, D. Wall-Palmer, & F. Wesselingh. (2020). The Naturalis collections of pelagic Gastropoda (Mollusca). Basteria, 84(4-6), 215–264.
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