Hormotoma ordovix (FOSSIL) J. Donald, 1902 †
Cerithiozone ornata (FOSSIL) A. Nützel & Nakazawa,2012 †
Cyrtostropha pacifica (FOSSIL) J. Perner, 1907 †
Murchisonia padangensis (FOSSIL) Fliegel, 1901 †
Murchisonia paeckelmanni (FOSSIL) Heidelberger & Koch,2005 †
Murchisonia pagodeformis (FOSSIL) Kirchner, 1915 †
Morania paradoxa (FOSSIL) (Lindström, 1884 †)
Aclisina parallela (FOSSIL) Sayre, 1930 †
Trypanocochlea parva (FOSSIL) A. Nützel & Nakazawa,2012 †
Hormotoma patriciaensis (FOSSIL) Parks, 1915 †
Vistilia paucivoluta (FOSSIL) Yin & E.L. Yochelson,1983 †
Hormotomina penduliobesa (FOSSIL) E.G. Linsley, 1968 †
Cheilotomona pentagonum (FOSSIL) Yu & al., 1974 †
Coelocaulus perlonga (FOSSIL) J. Perner, 1907 †
Trypanocochlea permiana (FOSSIL) Xi, 1974 †
Michelia persimilis (FOSSIL) C.M. Poulsen, 1974 †
Murchisonia petila (FOSSIL) J.W. Hall& R.P. Whitfield, 1872 †
Hormotoma piperi (FOSSIL) J. Donald, 1899 †
Murchisonia placida (FOSSIL) Billings, 1865 †
Michelia planogyrata (FOSSIL) J.W. Hall, 1859 †
Murchisonia plumleyi (FOSSIL) Blodgett, 1992 †
Catazone podolica (FOSSIL) (Wenjukov, 1899 †)
Bellazona polita (FOSSIL) W.J. Gordon& E.L. Yochelson, 1987 †
Hormotoma polita (FOSSIL) J. Donald, 1902 †
Coelocaulus pollens (FOSSIL) J. Perner, 1907 †
Murchisonia pragensis (FOSSIL) Frýda & Manda, 1997 †
Hormotoma prava (FOSSIL) R.P. Whitfield, 1886 †
Mesocoelia priscum (FOSSIL) (Münster, 1840 †)
Murchisonia pritchardi (FOSSIL) R. Etheridge jr., 1898 †
Wuxuanella pseudobinodosa (FOSSIL) (Heidelberger, 2001 †)
Murchisonia pygmaea (FOSSIL) Rowley, 1895 †
Lodanaria quadricarinata (FOSSIL) (Stauffer, 1909 †)
Mesocoelia quarki (FOSSIL) Tassell, 1982 †
Aclisina regularis (FOSSIL) Xi, 1980 †
Eohormotomina restisevoluta (FOSSIL) M.A. Frey & al., 2014 †