The Callapoid family Necrocarcinidae Förster, 1968, was a successful group of crabs distributed worldwide and ranging in age from the Early Cretaceous to the Oligocene. Included taxa appear to have preferred littoral to sublittoral environments (e.g., Fraaye, 1994), have crawled closely appressed to the bottom and/or to have sheltered in muddy bottoms (Bishop and Williams, 1991), and probably were adapted to temperate to tropical climatic settings (Schweitzer and Feldmann, 2000). This lifestyle is similar to that of extant calappids. Before the present study only two calappids were known from the Maastrichtian type area. Both these species,...

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