| The present paper contains a systematic revision of the genera <i>Entolium</i> and <i>Propeamussium</i> (Amusiidae) and <i>Syncyclonema</i> (Pectinidae, Bivalvia, Mollusca) in European Cretaceous boreal seas.In <i>Entolium</i> two species are described, in <i>Propeamussium</i> one, and in <i>Syncyclonema</i> eight of which one (<i>S. hagenowi</i>) is new to science, two (<i>S. gamsensis</i> and <i>S. haggi</i>) are renamed and a former variety is given specific status (<i>S. haldonensis</i>).Stress is laid on redefining the species, mostly along biological lines. Material has been studied from as many localities as possible; a... |
