Kalayoldia oregona (FOSSIL) (Shumard, 1858 †)
Mirayoldia ossoriensis (FOSSIL) Pronina, 1973 †
Yoldiella otekaikensis (FOSSIL) P.A. Maxwell, 1969 †
Yoldiella ovata J.A. Allen, A. Sanders& G. Hannah, 1995
Yoldiella ovulum R. La Perna, 2004
Portlandia pachia (A.E. Verrill & K.J. Bush,1898)
Orthoyoldia panamensis (W.H. Dall, 1908)
Yoldiella paranapuaensis N.P. Benaim & R.S. Absalão,2011
Scissileda parceplicata (K.H. Barnard, 1964)
Yoldia peninsularis (FOSSIL) Anelli & al., 2006 †
Yoldiella perplexa J.A. Allen, A. Sanders& G. Hannah, 1995
Yoldiella philippiana (P. Nyst, 1845)
Yoldia pisciformis (FOSSIL) J. Brown & H.A. Pilsbry,1917 †
Yoldia posneri (FOSSIL) L. Krishtofovich, 1973 †
Yoldiella powelli (R.K. Dell, 1950)
Yoldia praeposneri (FOSSIL) L. Krishtofovich, 1984 †
Yoldiella profundorum (J.C. Melvill & R. Standen,1912)
Yoldiella propinqua (W. Leche, 1878)
Orthoyoldia psammotaea (FOSSIL) W.H. Dall, 1898 †
Yoldia pseudonotabilis O.A. Scarlato, 1981
Microgloma pusilla (J.G. Jeffreys, 1879)
Yoldiella pygmaea (FOSSIL) (G.G. Münster, 1835 †)
Cnesterium rekinnensis (FOSSIL) V.N. Sinelnikova, 1990 †
Yoldiella remensa (T. Iredale, 1929)
Yoldiella retusa (R.B. Hinds, 1843)
Yoldiella riograndensis (C. Esteves, 1984)
Yoldiella robusta J.A. Allen, A. Sanders& G. Hannah, 1995
Yoldia rostriformis (FOSSIL) Y.B. Gladenkov, 1984 †
Yoldia rovascudae (FOSSIL) F. Sacco, 1897 †
Yoldiella sabrina (C. Hedley, 1916)
Yoldia sagittalia (FOSSIL) Yokoyama, 1925 †
Yoldia saitoi (FOSSIL) S. Uozumi, 1957 †
Portlandia sanchuensis (FOSSIL) (Yabe & Nagao 1926) †
Yoldia sapotilla (A.A. Gould, 1841)
Orthoyoldia scapania (W.H. Dall, 1890)