Amphelissa
isisensis
R. Etheridge jr., 1921 †
(FOSSIL)

Boucotspira
carinifer
(E.F.R.K. Koken, 1896 †)
(FOSSIL)

Boucotspira
fimbriata
Rohr, 1980 †
(FOSSIL)

Boucotspira
lamellosa
(Lindström, 1884 †)
(FOSSIL)

Boucotspira
ordovicia
(Longst, 1924 †)
(FOSSIL)

Boucotspira
ozawai
(O. Kobayashi, 1930 †)
(FOSSIL)

Boucotspira
wisbyensis
(Lindström, 1884 †)
(FOSSIL)

Boucotspira
visbeyensis
(Lindstrom, 1884 †)
(FOSSIL)

Burdikinia
burdekinensis
(R. Etheridge jr., 1917 †)
(FOSSIL)

Helicotoma
brocki
Foerste, 1912 †
(FOSSIL)

Helicotoma
declivis
Safford, 1869 †
(FOSSIL)

Helicotoma
gorgonea
Billings, 1865 †
(FOSSIL)

Helicotoma
granosa
Ulrich & Scofield, 1897 †
(FOSSIL)

Helicotoma
griffinorum
Rohr, 1980 †
(FOSSIL)

Helicotoma
marginata
Ulrich & Scofield, 1897 †
(FOSSIL)

Helicotoma
miser
Billings, 1865 †
(FOSSIL)

Helicotoma
oriens
J. Perner, 1903 †
(FOSSIL)

Helicotoma
planulata
Salter, 1859 †
(FOSSIL)

Helicotoma
planulata
Salter, 1859 †
(FOSSIL)

Helicotoma
planulata
Salter, 1859 †
(FOSSIL)

Helicotoma
planulatoides
Ulrich & Scofield, 1897 †
(FOSSIL)

Helicotoma
proserpina
Billings, 1865 †
(FOSSIL)

Helicotoma
robinsoni
Rohr, 1988 †
(FOSSIL)

Helicotoma
robusta
Ulrich & Scofield, 1897 †
(FOSSIL)

Helicotoma
similis
R.P. Whitfield, 1890 †
(FOSSIL)

Helicotoma
subquadrata
Ulrich & Scofield, 1897 †
(FOSSIL)

Helicotoma
superba
E.F.R.K. Koken, 1897 †
(FOSSIL)

Helicotoma
tennesseensis
Safford, 1869 †
(FOSSIL)

Helicotoma
tritonia
Billings, 1865 †
(FOSSIL)

Helicotoma
umbilicata
Ulrich & Scofield, 1897 †
(FOSSIL)

Helicotoma
verticalis
Ulrich & Scofield, 1897 †
(FOSSIL)

Helicotoma
whiteavesiana
W.J. Raymond, 1908 †
(FOSSIL)

Helicotoma
missouriensis
R.M. Branson, 1909 †
(FOSSIL)

Helicotoma
vagrans
W.J. Raymond, 1905 †
(FOSSIL)

Helicotoma
medfraensis
Rohr & Blodgett, 1988 †
(FOSSIL)

Helicotoma
gubanovi
Rohr, 1994 †
(FOSSIL)

Helicotoma
amanoi
Kobayashi, 1958 †
(FOSSIL)

Helicotoma
jonesi
Kobayashi, 1959 †
(FOSSIL)

Helicotoma
yabei
Kobayashi, 1930 †
(FOSSIL)

Helicotoma
tamurai
Kobayashi, 1930 †
(FOSSIL)

Helicotoma
norvegica
E.F.R.K. Koken & J. Perner, 1925 †
(FOSSIL)

Helicotoma
uniangulata
J.W. Hall, 1847 †
(FOSSIL)

Helicotoma
wanwanensis
Kobayashi, 1933 †
(FOSSIL)

Helicotoma
spinosa
Salter, 1859 †
(FOSSIL)

Helicotoma
kanekoi
T. Kobayashi, 1931 †
(FOSSIL)

Helicotoma
patula
Lamont, 1946 †
(FOSSIL)

Lophonema
calphurnia
(Billings, 1865 †)
(FOSSIL)

Lophonema
circumlirata
(R.P. Whitfield, 1886 †)
(FOSSIL)

Lophonema
costata
Kobayashi, 1959 †
(FOSSIL)

Lophonema
frydai
Rohr, 1994 †
(FOSSIL)

Lophonema
orientalia
Yü, 1961 †
(FOSSIL)

Lophonema
peccatonica
(Sardeson, 1896 †)
(FOSSIL)

Lophonema
perstriata
(Billings, 1859 †)
(FOSSIL)

Lophonema
taneyensis
(Cullison, 1944 †)
(FOSSIL)

Lophonema
tricarinata
(Billings, 1859 †)
(FOSSIL)

Lophonema
wuhuensis
Endo, 1935 †
(FOSSIL)

Ophiletina
bromidensis
(Rohr & Johns, 1990 †)
(FOSSIL)

Ophiletina
fausta
(Sardeson, 1896 †)
(FOSSIL)

Ophiletina
shokoriense
O. Kobayashi, 1930 †
(FOSSIL)

Ophiletina
sublaxa
Ulrich & Scofield, 1897 †
(FOSSIL)

Palaeomphalus
obtusangulus
(Angelin & Lindström, 1880 †)
(FOSSIL)

Palaeomphalus
olsoni
Rohr, 1980 †
(FOSSIL)

Palaeomphalus
giganteus
Kobayashi, 1959 †
(FOSSIL)