Erato panamensis P.P. Carpenter, 1856
Dolichupis panamensis (W.H. Dall, 1902)
Trivellona panglaoica Fehse, 2017
Pseudopusula parcicosta (FOSSIL) (Reiss, 1862 †)
Niveria parvavellana (F. Sacco, 1894)
Trivellona paucicostata (M.M. Schepman, 1909)
Trivellona paucicostata oligopleura L. Dolin, 2001
Dolichupis paucilirata (G.B. II Sowerby, 1870)
Eotrivia pedicularis (FOSSIL) (G.P. Deshayes, 1865 †)
Pusula pediculus (C. Linnaeus, 1758)
Trivia pellucida L.A. Reeve, 1865
Trivirostra pellucidula (J.S. Gaskoin, 1846)
Gregoia peregrina Fehse, 2017
Erato perexigua (FOSSIL) T.A. Conrad, 1841 †
Pusula permagna (FOSSIL) (C.W. Johnson, 1910 †)
Niveria permixta (G.J. De Cristofori& G. Jan, 1832)
Erato pernana (FOSSIL) F. Sacco, 1894 †
Gregoia petitdevoizei D. Fehse, 2015
Trivia petrela (FOSSIL) A.A. Olsson & A. Harbison,1953 †
Niveria peyreirensis (A.E.M. Cossmann& M.A. Peyrot, 1924)
Triviella phalacra F.A. Schilder, 1930
Cleotrivia pilula (L.C. Kiener, 1843)
Dolichupis pingius L.R.L. Simone & C.M. Cunha,2012
Trivia pinguior (FOSSIL) J. Marwick, 1926 †
Trivia pisolina (FOSSIL) (J.B.P.A. Lamarck,1810 †)
Cleotrivia pisum (J.S. Gaskoin, 1846)
Trivellona plana Fehse, 2017
Eratotrivia platystoma (FOSSIL) (F.E. Edwards, 1854 †)
Eratotrivia platystoma bernayi (FOSSIL) (A.E.M. Cossmann, 1886 †)
Pusula platyventer (FOSSIL) D. Fehse & J. Grego,2014 †
Proterato pliocenica (FOSSIL) C.A. Fleming, 1943 †
Trivirostra polynesiae C.N. Cate, 1979
Triviella pompholugota (FOSSIL) (R. Tate, 1890 †)
Trivirostra poppei D. Fehse, 1999
Pseudopusula praecursor (FOSSIL) D. Fehse & J. Grego,2014 †