Trigonoarca passayana (FOSSIL) (d'Orbigny 1844) †
Trigonoarca passyana (FOSSIL) (A.V.M.D. D'Orbigny †)
Cucullaea patagonensis (FOSSIL) Erdmann & Morra, 1985 †
Cucullaea pectinata (FOSSIL) Phillips, 1829 †
Paralopatinia pectunculoides (FOSSIL) (Trautschold 1861) †
Cucullaea perijana (FOSSIL) F. Hodson & al., 1927 †
Cucullaea petita T. Iredale, 1939
Lopatinia petschorae (FOSSIL) (Keyserling, 1846 †)
Cucullaea polyglypha Laube, 1865
Cucullaea ponderosa (FOSSIL) F.W. Hutton, 1873 †
Idonearca powersi (FOSSIL) L.W. Stephenson, 1941 †
Lopatinia proclivia (FOSSIL) N.W. Gardner, 2010 †
Cucullaea reticulata (FOSSIL) Phillips, 1829 †
Cucullaea rugosa (FOSSIL) (Münster, 1841 †)
Cucullaea sindangbaranensis (FOSSIL) Martin, 1910 †
Cucullaea singularis (FOSSIL) C.A. von Zittel, 1865 †
Idonearca stephensoni (FOSSIL) Stoyanow, 1949 †
Cucullaea striatiumbonata (FOSSIL) Imlay, 1940 †
Idonearca thevestensis (FOSSIL) Coquand, 1862 †
Cucullaea transversa (FOSSIL) T. Nagao, 1934 †
Cucullaea transversa (FOSSIL) B. Rogers & B. Rogers,1839 †
Idonearca transversa (FOSSIL) T.A. Conrad 1862 †
Idonearca trigona (FOSSIL) Seguenza, 1882 †
Cucullaea vaga T. Iredale, 1930
Cucullaea vagans (FOSSIL) W. Keeping †
Cucullaea volgensis (FOSSIL) Barbot de Marny, 1874 †
Idonearca vulgaris (FOSSIL) (Morton, 1830 †)
Cucullaea waihaoensis (FOSSIL) R.S. Allan, 1926 †
Cucullaea waihoaensis (FOSSIL) Allan, 1927 †
Cucullaea worthingtoni (FOSSIL) F.W. Hutton, 1873 †
Cucullastis zealandica (FOSSIL) (Woods, 1917 †)