Latest Cretaceous Pulvinites (Bivalvia, Pterioidea, Pulvinitidae), new to the Maastrichtian type area, The Netherlands

On the basis of a single left valve, preserved as a calcitic-prismatic shell and an associated internal mould, a new species of pulvinitid, Pulvinites elenae spec. nov., is recorded from the uppermost Nekum Member (subunit IVe-7; Maastricht Formation, upper Maastrichtian) of the Sint-Pietersberg area, south of Maastricht. It differs from two European and North American congeners of comparable age, P. adansonii and P. argenteus, by being comparatively flat, with downturned lateral and ventral margins, as well as by being of smaller size and in having a rounded outline, and a short and low ligamental area with only 4-5 ligament pits.