Calappidae is a family of crabs containing 16 genera, of which 7 are only known as fossils: \n* Acanthocarpus Stimpson, 1871 \n* Calappa Weber, 1795 \n* † Calappella Rathbun, 1919 \n* † Calappilia A. Milne-Edwards, 1873 \n* Calappula Galil, 1997 \n* Cryptosoma Brullé, 1839 \n* Cycloes De Haan, 1837 \n* Cyclozodion Williams & Child, 1989 \n* Mursia A. G. Desmarest, 1823 \n* † Mursilata C.-H. Hu & Tao, 1996 \n* † Mursilia Rathbun, 1918 \n* † Mursiopsis Ristori, 1889 \n* Paracyclois Miers, 1886 \n* Platymera H. Milne Edwards, 1837 \n* † Stenodromia A. Milne-Edwards, 1873 \n* † Tutus Collins in Collins, Portell & Donovan, 2009