Malletiidae H. & A. Adams, 1858
Cleidophorus planulata
Cucullella antiqua
Nuculites coarctatus (Phillips, 1848)
Nuculites ichikawai
Nuculites jutsoni Chapman, 1908
Nuculites kimuari
Nuculites maccoyianus Chapman, 1908
Nuculites neglectus
Nuculites planulatus Hall
Nuculites suboblongatus
Nuculites subquadratus Chapman, 1908
Nuculites wattii
Pyrenomoeus cuneatus