Yoldiella exigua (K.H.J. Thiele& S.G.A. Jaeckel, 1931)
Yoldiella expansa (J.G. Jeffreys, 1876)
Yoldiella extensa J.A. Allen, A. Sanders& G. Hannah, 1995
Yoldiella fabula J.A. Allen, A. Sanders& G. Hannah, 1995
Yoldiella folini A. Warén, 1978
Yoldiella fora (J.A. Allen, A. Sanders& G. Hannah, 1995)
Yoldiella frami J. Knudsen, 1985
Scissileda franciscoi (FOSSIL) (Shuto 1971) †
Yoldia frater (FOSSIL) W.H. Dall, 1898 †
Yoldia freytagi (FOSSIL) N.H. Ludbrook, 1966 †
Yoldiella frigida (O.M. Torell, 1859)
Yoldiella fumosa (E.A. Smith, 1895)
Portlandia furcata (FOSSIL) M. Ichikawa & K. Maeda,1958 †
Yoldia gackhensis (FOSSIL) L. Krishtofovich, 1984 †
Yoldiella gibbosula (K.H.J. Thiele& S.G.A. Jaeckel, 1931)
Yoldia glaberrima (FOSSIL) (Münster, 1837 †)
Portlandia glacialis (FOSSIL) (Wood, 1828 †)
Portlandia glacialis (J.E. Gray, 1825)
Yoldia gladenkovi (FOSSIL) Marincovich Jr., 1993 †
Yoldia glauca J.T. Kuroda& T. Habe in T. Habe, 1961
Yoldiella granula (W.H. Dall, 1908)
Yoldia gretschischkini (FOSSIL) L. Krishtofovich, 1964 †
Microgloma guilonardi (B.W. Hoeksema, 1993)
Yoldiella haasti (FOSSIL) P.A. Maxwell, 1992 †
Orthoyoldia haboroensis (FOSSIL) S. Uozumi, 1957 †
Yoldiella hamiltoni (A.W.B. Powell, 1935)
Yoldiella hanna J.A. Allen, A. Sanders& G. Hannah, 1995
Yoldia hikoshimensis (FOSSIL) K. Hirayama, 1956 †
Yoldiella hoylei (E.A. Smith, 1885)
Yoldia hyperborea (A.A. Gould, 1841)
Yoldia hyperborea limatuloides K.W. Ockelmann, 1954
Portlandia impressa Perri, 1975
Yoldia impressa (FOSSIL) T.A. Conrad, 1865 †
Yoldiella incala J.A. Allen, A. Sanders& G. Hannah, 1995
Yoldiella inconspicua A.E. Verrill & K.J. Bush,1898