Aplexa
marmorata
L. Guilding, 1828

Aplexa
maugeriae
(J.E. Gray, 1837)

Aplexa
waterloti
J. Germain, 1911

Aplexa
spiculata
P.H. Fischer & J.C.H. Crosse, 1886

Aplexa
nitens
P.M.A. Morelet, 1849

Aplexa
tapanensis
P.H. Fischer & J.C.H. Crosse, 1886

Aplexa
spathidophallus
D.W. Taylor, 2003

Aplexa
aphallica
Y.I. Starobogatov, 1992

Aplexa
ataxiaca
(P. Fagot, 1883)

Aplexa
moskvichevae
Y.I. Starobogatov, 1992

Aplexa
orientalis
Y.I. Starobogatov, 1992

Aplexa
turrita
(O.F. Müller, 1774)

Aplexa
acuminata
(J.E. Gray & G.B. Sowerby, 1873)

Aplexa
primigenia
G.P. Deshayes, 1863 †
(FOSSIL)

Aplexa
jaimei
(Hermite, 1879 †)
(FOSSIL)

Aplexa
subhypnorum
F. Gottschick, 1920 †
(FOSSIL)

Aplexa
subhypnorum
F. Gottschick, 1920 †
(FOSSIL)

Aplexa
marmorata
L. Guilding, 1828

Aplexa
maugeriae
(J.E. Gray, 1837)

Aplexa
waterloti
J. Germain, 1911

Aplexa
spiculata
P.H. Fischer & J.C.H. Crosse, 1886

Aplexa
nitens
P.M.A. Morelet, 1849

Aplexa
tapanensis
P.H. Fischer & J.C.H. Crosse, 1886

Aplexa
spathidophallus
D.W. Taylor, 2003

Aplexa
aphallica
Y.I. Starobogatov, 1992

Aplexa
ataxiaca
(P. Fagot, 1883)

Aplexa
moskvichevae
Y.I. Starobogatov, 1992

Aplexa
orientalis
Y.I. Starobogatov, 1992

Aplexa
turrita
(O.F. Müller, 1774)

Aplexa
acuminata
(J.E. Gray & G.B. Sowerby, 1873)

Aplexa
primigenia
G.P. Deshayes, 1863 †
(FOSSIL)

Aplexa
jaimei
(Hermite, 1879 †)
(FOSSIL)

Aplexa
subhypnorum
F. Gottschick, 1920 †
(FOSSIL)

Aplexa
subhypnorum
F. Gottschick, 1920 †
(FOSSIL)

Archiphysa
ashmuni
D.W. Taylor, 2003

Archiphysa
laphami
(F.C. Baker, 1928)

Archiphysa
sonomae
(A.G. Smith, 1967)

Archiphysa
zomos
(J.L.Jr. Baily & J.L.Jr. Baily, 1952)

Archiphysa
latchfordii
(F.C. Baker, 1928)

Haitia
integra
(S.S. Haldeman, 1841)

Haitia
mexicana
(J.C.H. Crosse & P.H. Fischer, 1878)

Haitia
natricina
D.W. Taylor, 1988

Haitia
cubensis
(H.A. Pilsbry, 1889)

Haitia
integra
(I. Lea, 1864)

Haitia
integra
(O.A. Crandall, 1901)

Haitia
elegans
(W.J. Clench & C.G. Aguayo, 1932)

Haitia
jamaicensis
(C.B. Adams, 1851)

Haitia
lacustris
(S. Clessin, 1886)

Haitia
moreleti
D.W. Taylor, 2003

Haitia
patzcuarensis
(H.A. Pilsbry, 1891)

Haitia
pomilia
(T.A. Conrad, 1834)

Haitia
porteri
(J. Germain, 1913)

Haitia
solidissima
(H.A. Pilsbry, 1920)

Haitia
venustula
(A.A. Gould, 1847)

Haitia
mexicana
(R.A. Philippi, 1841)

Haitia
mexicana
(A.A. Gould, 1855)

Haitia
acuta
(D.W. Taylor, 2003)

Laurentiphysa
chippevarum
D.W. Taylor, 2003

Mayabina
carolita
(F.P. Jousseaume, 1887)

Mayabina
nitidula
(S. Clessin, 1886)

Mayabina
obtusa
(S. Clessin, 1885)

Mayabina
petenensis
D.W. Taylor, 2003

Mayabina
pliculosa
(E.C. Von Martens, 1898)

Mayabina
polita
D.W. Taylor, 2003

Mayabina
sanctijohannis
D.W. Taylor, 2003

Mayabina
spiculata
(P.M.A. Morelet, 1849)

Mayabina
tapanensis
(J.C.H. Crosse & P.H. Fischer, 1882)

Mayabina
tempisquensis
D.W. Taylor, 2003

Mayabina
gualbertoi
(A. Cousin, 1887)

Mayabina
martinidella
(F.P. Jousseaume, 1887)

Mexinauta
gracilentus
(P.H. Fischer & J.C.H. Crosse, 1886)

Mexinauta
impluviatus
(P.M.A. Morelet, 1849)

Mexinauta
laetus
(E.C. Von Martens, 1898)

Mexinauta
nicaraguanus
(P.M.A. Morelet, 1851)

Mexinauta
nitens
(R.A. Philippi, 1841)

Mexinauta
peruvianus
(J.E. Gray, 1828)

Mexinauta
princeps
(B. Phillips, 1846)

Mexinauta
aurantia
(P.H. Fischer & J.C.H. Crosse, 1886)

Mexinauta
aurantia
(P.H. Fischer & J.C.H. Crosse, 1886)

Mexinauta
nitens
(J.C.H. Crosse & P.H. Fischer, 1886)

Physa
bermudezi
(C.G. Aguayo, 1935)

Physa
columbiana
H. Hemphill, 1890

Physa
conoidea
P.H. Fischer & J.C.H. Crosse, 1886

Physa
costata
(W. Newcomb, 1861)

Physa
fontinalis
(C. Linnaeus, 1758)

Physa
globosa
S.S. Haldeman, 1841

Physa
hendersoni
W.J. Clench, 1925

Physa
heterotropha
T. Say, 1817

Physa
hordacea
I. Lea, 1864

Physa
jennessi
(W.H. Dall, 1919)

Physa
magnalacustris
B. Walker, 1901

Physa
megalochlamys
D.W. Taylor, 1988

Physa
microstriata
J.L. Chamberlin & S.S. Berry, 1930

Physa
natricina
(D.W. Taylor, 1988)

Physa
osculans
(S.S. Haldeman, 1841)

Physa
parkeri
A. Currier, 1881

Physa
vinosa
A.A. Gould, 1847

Physa
virginea
A.A. Gould, 1847

Physa
zionis
H.A. Pilsbry, 1926

Physa
kultukiana
W. Dybowski, 1913

Physa
guadeloupensis
S. Clessin, 1885

Physa
aurea
I. Lea, 1838

Physa
hawnii
I. Lea, 1864

Physa
hendersoni
W.J. Clench, 1925

Physa
skinneri
D.W. Taylor, 1954

Physa
parkeri
H.B. Baker, 1928

Physa
parkeri
A.T. von Middendorff, 1843

Physa
venusta
I. Lea, 1864

Physa
verticulata
A.A. Gould, 1859

Physa
subopaca
(P.M. Pallary, 1926)

Physa
subopaca
P.M. Pallary, 1920

Physa
impluviata
E.C. Von Martens, 1898

Physa
fuliginea
E.C. Von Martens, 1898

Physa
cisternina
P.M.A. Morelet, 1851

Physa
osculans
H.A. Pilsbry, 1891

Physa
arachleica
Y.I. Starobogatov & L.A. Prozorova, 1989

Physa
hankensis
Y.I. Starobogatov & L.A. Prozorova, 1989

Physa
mirollii
D.W. Taylor, 2003

Physa
streletzkajae
Y.I. Starobogatov & L.L. Budnikova, 1976

Physa
grijalvae
D.W. Taylor, 2003

Physa
saffordi
I. Lea, 1864

Physa
janeirensis
H.H. Beck

Physa
petiti
J.C.H. Crosse, 1872

Physa
variabilis
J.E. Gray, 1843

Physa
flavida
S. Clessin, 1886

Physa
aspii
E.L. Holmberg, 1909

Physa
loosi
E.L. Holmberg, 1909

Physa
alluaudi
P. Dautzenberg, 1908

Physa
angolensis
P.M.A. Morelet, 1868

Physa
borbonica
A.E.J. Férussac, 1827

Physa
canescens
P.M.A. Morelet, 1868

Physa
coulboisi
J.R. Bourguignat, 1888

Physa
crystallina
P.M.A. Morelet, 1868

Physa
dautzenbergi
J. Germain, 1905

Physa
guillaini
J.C.H. Crosse, 1868

Physa
kanakina
J. Gassies, 1857

Physa
moluccensis
R.P. Lesson, 1831

Physa
randabeli
J.R. Bourguignat, 1888

Physa
tetrica
J.C.H. Crosse, 1868

Physa
tongana
J.R.C. Quoy & J.P. Gaimard, 1832

Physa
vaneyi
J. Germain, 1907

Physa
chilensis
S. Clessin, 1886

Physa
nodulosa
W.A. Biese, 1948

Physa
tetrica
P.M.A. Morelet, 1857

Physa
solida
R.A. Philippi, 1841

Physa
humerosa
A.A. Gould, 1855

Physa
papaveroi
J.L.M. Leme, 1966

Physa
compacta
(W.H. Pease, 1870)

Physa
occidentalis
G.W. Tryon, 1865

Physa
pumilia
T.A. Conrad, 1834

Physa
ancillaria
I. Lea, 1864

Physa
carolinae
A.R. Wethington, J.B. Wise & R.T. Dillon, 2009

Physa
adversa
(E.M. Da Costa, 1778)

Physa
bulla
(O.F. Müller, 1774)

Physa
chukchensis
Y.I. Starobogatov & L.L. Budnikova, 1976

Physa
jarochnovitschae
Y.I. Starobogatov, 1992

Physa
khabarovskiensis
Y.I. Starobogatov, 1992

Physa
kuvaevi
Y.I. Starobogatov, 1992

Physa
tei
Y.I. Starobogatov, 1992

Physa
cornea
H.B. Preston, 1907

Physa
taslei
J.R. Bourguignat, 1860

Physa
albertisi
(S. Clessin, 1866)

Physa
lactaena
H.D. Russell, 1935 †
(FOSSIL)

Physa
prinsepii
Sowerby, 1840 †
(FOSSIL)

Physa
meigsii
W.H. Dall, 1890 †
(FOSSIL)

Physa
meneghinii
F. Sacco, 1886 †
(FOSSIL)

Physa
subacuta
É.A. Benoist, 1873 †
(FOSSIL)

Physa
bermudezi
(C.G. Aguayo, 1935)

Physa
columbiana
H. Hemphill, 1890

Physa
conoidea
P.H. Fischer & J.C.H. Crosse, 1886

Physa
costata
(W. Newcomb, 1861)

Physa
fontinalis
(C. Linnaeus, 1758)

Physa
globosa
S.S. Haldeman, 1841

Physa
hendersoni
W.J. Clench, 1925

Physa
heterotropha
T. Say, 1817

Physa
hordacea
I. Lea, 1864

Physa
jennessi
(W.H. Dall, 1919)

Physa
magnalacustris
B. Walker, 1901

Physa
megalochlamys
D.W. Taylor, 1988

Physa
microstriata
J.L. Chamberlin & S.S. Berry, 1930

Physa
natricina
(D.W. Taylor, 1988)

Physa
osculans
(S.S. Haldeman, 1841)

Physa
parkeri
A. Currier, 1881

Physa
vinosa
A.A. Gould, 1847

Physa
virginea
A.A. Gould, 1847

Physa
zionis
H.A. Pilsbry, 1926

Physa
kultukiana
W. Dybowski, 1913

Physa
guadeloupensis
S. Clessin, 1885

Physa
aurea
I. Lea, 1838

Physa
hawnii
I. Lea, 1864

Physa
hendersoni
W.J. Clench, 1925

Physa
skinneri
D.W. Taylor, 1954

Physa
parkeri
H.B. Baker, 1928

Physa
parkeri
A.T. von Middendorff, 1843

Physa
venusta
I. Lea, 1864

Physa
verticulata
A.A. Gould, 1859

Physa
subopaca
(P.M. Pallary, 1926)

Physa
subopaca
P.M. Pallary, 1920

Physa
impluviata
E.C. Von Martens, 1898

Physa
fuliginea
E.C. Von Martens, 1898

Physa
cisternina
P.M.A. Morelet, 1851

Physa
osculans
H.A. Pilsbry, 1891

Physa
arachleica
Y.I. Starobogatov & L.A. Prozorova, 1989

Physa
hankensis
Y.I. Starobogatov & L.A. Prozorova, 1989

Physa
mirollii
D.W. Taylor, 2003

Physa
streletzkajae
Y.I. Starobogatov & L.L. Budnikova, 1976

Physa
grijalvae
D.W. Taylor, 2003

Physa
saffordi
I. Lea, 1864

Physa
janeirensis
H.H. Beck

Physa
petiti
J.C.H. Crosse, 1872

Physa
variabilis
J.E. Gray, 1843

Physa
flavida
S. Clessin, 1886

Physa
aspii
E.L. Holmberg, 1909

Physa
loosi
E.L. Holmberg, 1909

Physa
alluaudi
P. Dautzenberg, 1908

Physa
angolensis
P.M.A. Morelet, 1868

Physa
borbonica
A.E.J. Férussac, 1827

Physa
canescens
P.M.A. Morelet, 1868

Physa
coulboisi
J.R. Bourguignat, 1888

Physa
crystallina
P.M.A. Morelet, 1868

Physa
dautzenbergi
J. Germain, 1905

Physa
guillaini
J.C.H. Crosse, 1868

Physa
kanakina
J. Gassies, 1857

Physa
moluccensis
R.P. Lesson, 1831

Physa
randabeli
J.R. Bourguignat, 1888

Physa
tetrica
J.C.H. Crosse, 1868

Physa
tongana
J.R.C. Quoy & J.P. Gaimard, 1832

Physa
vaneyi
J. Germain, 1907

Physa
chilensis
S. Clessin, 1886

Physa
nodulosa
W.A. Biese, 1948

Physa
tetrica
P.M.A. Morelet, 1857

Physa
solida
R.A. Philippi, 1841

Physa
humerosa
A.A. Gould, 1855

Physa
papaveroi
J.L.M. Leme, 1966

Physa
compacta
(W.H. Pease, 1870)

Physa
occidentalis
G.W. Tryon, 1865

Physa
pumilia
T.A. Conrad, 1834

Physa
ancillaria
I. Lea, 1864

Physa
carolinae
A.R. Wethington, J.B. Wise & R.T. Dillon, 2009

Physa
adversa
(E.M. Da Costa, 1778)

Physa
bulla
(O.F. Müller, 1774)

Physa
chukchensis
Y.I. Starobogatov & L.L. Budnikova, 1976

Physa
jarochnovitschae
Y.I. Starobogatov, 1992

Physa
khabarovskiensis
Y.I. Starobogatov, 1992

Physa
kuvaevi
Y.I. Starobogatov, 1992

Physa
tei
Y.I. Starobogatov, 1992

Physa
cornea
H.B. Preston, 1907

Physa
taslei
J.R. Bourguignat, 1860

Physa
albertisi
(S. Clessin, 1866)

Physa
lactaena
H.D. Russell, 1935 †
(FOSSIL)

Physa
prinsepii
Sowerby, 1840 †
(FOSSIL)

Physa
meigsii
W.H. Dall, 1890 †
(FOSSIL)

Physa
meneghinii
F. Sacco, 1886 †
(FOSSIL)

Physa
subacuta
É.A. Benoist, 1873 †
(FOSSIL)

Physa
bermudezi
(C.G. Aguayo, 1935)

Physa
columbiana
H. Hemphill, 1890

Physa
conoidea
P.H. Fischer & J.C.H. Crosse, 1886

Physa
costata
(W. Newcomb, 1861)

Physa
fontinalis
(C. Linnaeus, 1758)

Physa
globosa
S.S. Haldeman, 1841

Physa
hendersoni
W.J. Clench, 1925

Physa
heterotropha
T. Say, 1817

Physa
hordacea
I. Lea, 1864

Physa
jennessi
(W.H. Dall, 1919)

Physa
magnalacustris
B. Walker, 1901

Physa
megalochlamys
D.W. Taylor, 1988

Physa
microstriata
J.L. Chamberlin & S.S. Berry, 1930

Physa
natricina
(D.W. Taylor, 1988)

Physa
osculans
(S.S. Haldeman, 1841)

Physa
parkeri
A. Currier, 1881

Physa
vinosa
A.A. Gould, 1847

Physa
virginea
A.A. Gould, 1847

Physa
zionis
H.A. Pilsbry, 1926

Physa
kultukiana
W. Dybowski, 1913

Physa
guadeloupensis
S. Clessin, 1885

Physa
aurea
I. Lea, 1838

Physa
hawnii
I. Lea, 1864

Physa
hendersoni
W.J. Clench, 1925

Physa
skinneri
D.W. Taylor, 1954

Physa
parkeri
H.B. Baker, 1928

Physa
parkeri
A.T. von Middendorff, 1843

Physa
venusta
I. Lea, 1864

Physa
verticulata
A.A. Gould, 1859

Physa
subopaca
(P.M. Pallary, 1926)

Physa
subopaca
P.M. Pallary, 1920

Physa
impluviata
E.C. Von Martens, 1898

Physa
fuliginea
E.C. Von Martens, 1898

Physa
cisternina
P.M.A. Morelet, 1851

Physa
osculans
H.A. Pilsbry, 1891

Physa
arachleica
Y.I. Starobogatov & L.A. Prozorova, 1989

Physa
hankensis
Y.I. Starobogatov & L.A. Prozorova, 1989

Physa
mirollii
D.W. Taylor, 2003

Physa
streletzkajae
Y.I. Starobogatov & L.L. Budnikova, 1976

Physa
grijalvae
D.W. Taylor, 2003

Physa
saffordi
I. Lea, 1864

Physa
janeirensis
H.H. Beck

Physa
petiti
J.C.H. Crosse, 1872

Physa
variabilis
J.E. Gray, 1843

Physa
flavida
S. Clessin, 1886

Physa
aspii
E.L. Holmberg, 1909

Physa
loosi
E.L. Holmberg, 1909

Physa
alluaudi
P. Dautzenberg, 1908

Physa
angolensis
P.M.A. Morelet, 1868

Physa
borbonica
A.E.J. Férussac, 1827

Physa
canescens
P.M.A. Morelet, 1868

Physa
coulboisi
J.R. Bourguignat, 1888

Physa
crystallina
P.M.A. Morelet, 1868

Physa
dautzenbergi
J. Germain, 1905

Physa
guillaini
J.C.H. Crosse, 1868

Physa
kanakina
J. Gassies, 1857

Physa
moluccensis
R.P. Lesson, 1831

Physa
randabeli
J.R. Bourguignat, 1888

Physa
tetrica
J.C.H. Crosse, 1868

Physa
tongana
J.R.C. Quoy & J.P. Gaimard, 1832

Physa
vaneyi
J. Germain, 1907

Physa
chilensis
S. Clessin, 1886

Physa
nodulosa
W.A. Biese, 1948

Physa
tetrica
P.M.A. Morelet, 1857

Physa
solida
R.A. Philippi, 1841

Physa
humerosa
A.A. Gould, 1855

Physa
papaveroi
J.L.M. Leme, 1966

Physa
compacta
(W.H. Pease, 1870)

Physa
occidentalis
G.W. Tryon, 1865

Physa
pumilia
T.A. Conrad, 1834

Physa
ancillaria
I. Lea, 1864

Physa
carolinae
A.R. Wethington, J.B. Wise & R.T. Dillon, 2009

Physa
adversa
(E.M. Da Costa, 1778)

Physa
bulla
(O.F. Müller, 1774)

Physa
chukchensis
Y.I. Starobogatov & L.L. Budnikova, 1976

Physa
jarochnovitschae
Y.I. Starobogatov, 1992

Physa
khabarovskiensis
Y.I. Starobogatov, 1992

Physa
kuvaevi
Y.I. Starobogatov, 1992

Physa
tei
Y.I. Starobogatov, 1992

Physa
cornea
H.B. Preston, 1907

Physa
taslei
J.R. Bourguignat, 1860

Physa
albertisi
(S. Clessin, 1866)

Physa
lactaena
H.D. Russell, 1935 †
(FOSSIL)

Physa
prinsepii
Sowerby, 1840 †
(FOSSIL)

Physa
meigsii
W.H. Dall, 1890 †
(FOSSIL)

Physa
meneghinii
F. Sacco, 1886 †
(FOSSIL)

Physa
subacuta
É.A. Benoist, 1873 †
(FOSSIL)

Physa
bermudezi
(C.G. Aguayo, 1935)

Physa
columbiana
H. Hemphill, 1890

Physa
conoidea
P.H. Fischer & J.C.H. Crosse, 1886

Physa
costata
(W. Newcomb, 1861)

Physa
fontinalis
(C. Linnaeus, 1758)

Physa
globosa
S.S. Haldeman, 1841

Physa
hendersoni
W.J. Clench, 1925

Physa
heterotropha
T. Say, 1817

Physa
hordacea
I. Lea, 1864

Physa
jennessi
(W.H. Dall, 1919)

Physa
magnalacustris
B. Walker, 1901

Physa
megalochlamys
D.W. Taylor, 1988

Physa
microstriata
J.L. Chamberlin & S.S. Berry, 1930

Physa
natricina
(D.W. Taylor, 1988)

Physa
osculans
(S.S. Haldeman, 1841)

Physa
parkeri
A. Currier, 1881

Physa
vinosa
A.A. Gould, 1847

Physa
virginea
A.A. Gould, 1847

Physa
zionis
H.A. Pilsbry, 1926

Physa
kultukiana
W. Dybowski, 1913

Physa
guadeloupensis
S. Clessin, 1885

Physa
aurea
I. Lea, 1838

Physa
hawnii
I. Lea, 1864

Physa
hendersoni
W.J. Clench, 1925

Physa
skinneri
D.W. Taylor, 1954

Physa
parkeri
H.B. Baker, 1928

Physa
parkeri
A.T. von Middendorff, 1843

Physa
venusta
I. Lea, 1864

Physa
verticulata
A.A. Gould, 1859

Physa
subopaca
(P.M. Pallary, 1926)

Physa
subopaca
P.M. Pallary, 1920

Physa
impluviata
E.C. Von Martens, 1898

Physa
fuliginea
E.C. Von Martens, 1898

Physa
cisternina
P.M.A. Morelet, 1851

Physa
osculans
H.A. Pilsbry, 1891

Physa
arachleica
Y.I. Starobogatov & L.A. Prozorova, 1989

Physa
hankensis
Y.I. Starobogatov & L.A. Prozorova, 1989

Physa
mirollii
D.W. Taylor, 2003

Physa
streletzkajae
Y.I. Starobogatov & L.L. Budnikova, 1976

Physa
grijalvae
D.W. Taylor, 2003

Physa
saffordi
I. Lea, 1864

Physa
janeirensis
H.H. Beck

Physa
petiti
J.C.H. Crosse, 1872

Physa
variabilis
J.E. Gray, 1843

Physa
flavida
S. Clessin, 1886

Physa
aspii
E.L. Holmberg, 1909

Physa
loosi
E.L. Holmberg, 1909

Physa
alluaudi
P. Dautzenberg, 1908

Physa
angolensis
P.M.A. Morelet, 1868

Physa
borbonica
A.E.J. Férussac, 1827

Physa
canescens
P.M.A. Morelet, 1868

Physa
coulboisi
J.R. Bourguignat, 1888

Physa
crystallina
P.M.A. Morelet, 1868

Physa
dautzenbergi
J. Germain, 1905

Physa
guillaini
J.C.H. Crosse, 1868

Physa
kanakina
J. Gassies, 1857

Physa
moluccensis
R.P. Lesson, 1831

Physa
randabeli
J.R. Bourguignat, 1888

Physa
tetrica
J.C.H. Crosse, 1868

Physa
tongana
J.R.C. Quoy & J.P. Gaimard, 1832

Physa
vaneyi
J. Germain, 1907

Physa
chilensis
S. Clessin, 1886

Physa
nodulosa
W.A. Biese, 1948

Physa
tetrica
P.M.A. Morelet, 1857

Physa
solida
R.A. Philippi, 1841

Physa
humerosa
A.A. Gould, 1855

Physa
papaveroi
J.L.M. Leme, 1966

Physa
compacta
(W.H. Pease, 1870)

Physa
occidentalis
G.W. Tryon, 1865

Physa
pumilia
T.A. Conrad, 1834

Physa
ancillaria
I. Lea, 1864

Physa
carolinae
A.R. Wethington, J.B. Wise & R.T. Dillon, 2009

Physa
adversa
(E.M. Da Costa, 1778)

Physa
bulla
(O.F. Müller, 1774)

Physa
chukchensis
Y.I. Starobogatov & L.L. Budnikova, 1976

Physa
jarochnovitschae
Y.I. Starobogatov, 1992

Physa
khabarovskiensis
Y.I. Starobogatov, 1992

Physa
kuvaevi
Y.I. Starobogatov, 1992

Physa
tei
Y.I. Starobogatov, 1992

Physa
cornea
H.B. Preston, 1907

Physa
taslei
J.R. Bourguignat, 1860

Physa
albertisi
(S. Clessin, 1866)

Physa
lactaena
H.D. Russell, 1935 †
(FOSSIL)

Physa
prinsepii
Sowerby, 1840 †
(FOSSIL)

Physa
meigsii
W.H. Dall, 1890 †
(FOSSIL)

Physa
meneghinii
F. Sacco, 1886 †
(FOSSIL)

Physa
subacuta
É.A. Benoist, 1873 †
(FOSSIL)

Physella
ancillaria
(T. Say, 1825)

Physella
cooperi
(G.W. Tryon, 1865)

Physella
gyrina
(T. Say, 1821)

Physella
gyrina
(T. Say, 1821)

Physella
heterostropha
(T. Say, 1817)

Physella
heterostropha
(T.A. Conrad, 1834)

Physella
johnsoni
(W.J. Clench, 1926)

Physella
platensis
Unknown

Physella
propinqua
G.W. Tryon, 1865

Physella
sayi
C.M. Tapparone-Canefri, 1876

Physella
spelunca
(H. Turner & W.J. Clench, 1974)

Physella
utahensis
(W.J. Clench, 1925)

Physella
wrighti
G.A. Te & A.H. Clarke, 1985

Physella
gyrina
O.A. Crandall, 1901

Physella
gyrina
C.M.F. Ancey, 1893

Physella
gyrina
A.A. Gould, 1855

Physella
gyrina
A.H. Clarke, 1973

Physella
gyrina
(I. Lea, 1838)

Physella
gyrina
H.B. Baker, 1928

Physella
gyrina
W. Newcomb, 1843

Physella
gyrina
(I. Lea, 1834)

Physella
gyrina
W.J. Clench, 1935

Physella
gyrina
I. Lea, 1864

Physella
gyrina
(I. Lea, 1834)

Physella
gyrina
(S.S. Haldeman, 1840)

Physella
gyrina
F.C. Baker, 1920

Physella
propinqua
I. Lea, 1856

Physella
propinqua
I. Lea, 1864

Physella
winnipegensis
E. Pip, 2004

Physella
gyrina
(I. Lea, 1864)

Physella
gyrina
I. Lea, 1864

Physella
virgata
I. Lea, 1864

Physella
hemphilli
D.W. Taylor, 2003

Physella
sayi
(I. Lea, 1864)

Physella
nuttallii
(I. Lea, 1864)

Physella
umbilicata
(J.W. Mighels, 1848)

Sibirenauta
elongatus
(A. Currier, 1867)

Sibirenauta
aenigma
(C.A. Westerlund, 1876)

Sibirenauta
depressior
(A.T. von Middendorff, 1851)

Sibirenauta
pictus
(A. Krause, 1883)

Sibirenauta
sibericus
(C.A. Westerlund, 1876)

Sibirenauta
tuwaensis
Y.I. Starobogatov & F. Zatrawkin, 1989

Sibirenauta
sibirica
(C.A. Westerlund, 1876)

Sibirenauta
tuvaensis
Y.I. Starobogatov, 1992