Classification of the order Cephalaspidea
Or. Cephalaspidea Fischer 1883
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Superfm. †Bulloidea Lamarck 1801
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Fm. Bullidae Lamarck 1801
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G. Bulla Linnaeus 1758
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Subg. †Bulla (Tornatina) Adams 1850
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†Tornatina camaronesia Ihering 1907
†Tornatina evoluta Waring 1917
†Tornatina munieri Loriol and Lambert 1893
Bulla ampulla Linnaeaus 1758
†Bulla arenasia Ihering 1907
†Bulla argosensis Harzhauser 2007
†Bulla assimilata Cooper 1894
†Bulla cantuaensis Anderson and Martin 1914
†Bulla clathrata Defrance 1817
†Bulla coclis Ponzi 1876
†Bulla conica Deshayes 1824
†Bulla conulus Deshayes 1824
†Bulla coronata Lamarck 1804
†Bulla crassiplica Conrad 1848
Bulla cylindrica Bruguière 1792
†Bulla cylindroides Deshayes 1824
†Bulla globulus Deshayes 1824
†Bulla infundibulum Ponzi 1876
†Bulla laevis Defrance 1817
Bulla lignaria Linnaeus 1758
†Bulla macfadyeni Cox 1935
†Bulla minuta Deshayes 1824
†Bulla ovulata Lamarck 1804
†Bulla plicata Deshayes 1824
Bulla punctulata Adams 1850
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Invalid names: Bulla adamsi Menke 1850 [synonym], Bulla aspera Adams 1850 [synonym], Bulla panamensis Philippi 1849 [replaced], Bulla quoyana Dall 1919 [synonym]
†Bulla reussi Martin 1879
†Bulla semistriata Deshayes 1824
†Bulla stampinensis Cossmann 1879
†Bulla striatella Lamarck 1804
†Bulla subampulla d'Orbigny 1852
†Bulla vernicosa Gould 1859
Bulla verrucosa Linnaeus 1758
Bulla volva Linnaeus 1758
G. †Bullinella Newton
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†Bullinella convoluta Brocchi 1800
†Bullinella jacksonensis Harris 1894
†Bullinella jacksonensis exta Harris 1894
Superfm. †Haminoeoidea Pilsbry 1895
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Fm. Haminoeidae Pilsbry 1895
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Subfm. Atydinae Thiele 1925
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G. Aliculastrum Pilsbry 1896
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Aliculastrum cylindricum Helbling 1779
†Aliculastrum protocylindrica Vredenburg 1925
†Atys (Aliculastrum) dalli Woodring 1928
†Atys (Aliculastrum) morantensis Woodring 1928
G. Atys Montfort 1810
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Subg. Atys (Atys) Montfort 1810
Subg. Atys (Weinkauffia) Adams 1858
†Atys aedemata Dall 1895
†Atys cylindricus Helbling 1779
†Atys doliolum Maury 1917
†Atys hyalina Watson 1886
†Atys multistriatus Schepman 1913
†Atys naucum Linnaeus 1758
Atys obscuratus Dall 1896
G. Haminoea Turton and Kingston 1830
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†Haminea grandis Aldrich 1886
†Haminea postangulata Clark and Woodford 1927
†Haminoea crocata Pease 1860
Haminoea vesicula Gould 1855
G. Roxania Leach In Gray 1847
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Subg. Roxania (Roxania) Leach In Gray 1847
Subg. Roxania (Sabatia)
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†Roxania chipolana Dall 1895
†Roxania mediolaevigata Traub 1938
†Roxania modesta Traub 1938
†Roxania pseudosemistriata Eames 1952
†Roxania ventricosa Traub 1938
Invalid names: Atydidae Thiele 1929 [empty], Bullactidae Thiele 1926 [empty], Smaragdinellidae Adams 1848 [empty]
Superfm. Philinoidea Gray 1850
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Fm. Cylichnidae Adams 1850
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G. †Abderospira Dall 1896
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†Abderospira aldrichi Langdon 1886
†Abderospira hornii Gabb 1864
†Abderospira leblanci Harris and Palmer 1947
†Abderospira meyeri Palmer 1937
†Abderospira oviformis Meyer 1886
†Abderospira sabina Palmer 1937
†Abderospira stewarti Palmer 1937
G. Acteocina Gray 1847 [barrel-bubble]
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†Acteocina anetaspira Woodring 1928
Acteocina bullata Kiener 1834
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Invalid names: Acteocina subbullata Pilsbry and Johnson 1917 [synonym]
†Acteocina bullata costaricana Olsson 1922
Acteocina canaliculata Say 1826
Acteocina candei d'Orbigny 1841
†Acteocina cederstromi Richards 1947
Acteocina chowanensis Richards 1947
Acteocina harpa Dall 1871
Acteocina inculta Gould 1855
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Invalid names: Acteocina smirna Dall 1919 [synonym], Coelophysis carinata Carpenter 1857 [synonym]
Acteocina infrequens Adams 1852
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Invalid names: Acteocina anomala Willett 1945 [synonym], Acteocina magdalenensis Dall 1919 [synonym], Tornatina tumida Olrdoyd 1921 [synonym]
†Acteocina kirkwoodiana Richards and Harbison 1944
†Acteocina lajonkaireana Basterot 1825
†Acteocina lepta Woodring 1928
†Acteocina puruha Pilsbry and Olsson 1941
Acteocina recta d'Orbigny 1845
†Acteocina sandwicensis Pease 1860
G. Bullaria Rafinesque 1815
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†Bullaria granosa Sowerby 1849
†Bullaria jolla Hanna 1927
†Bullaria paupercula Sowerby 1849
†Bullaria sarahberlinerae Maury 1917
†Bullaria tumida Packard 1922
G. †Bullichna Nordsieck 1972
G. Cylichna Lovén 1846
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Cylichna alba Brown 1827
†Cylichna andersoni Murphy and Rodda 1960
†Cylichna angustata Cossman and Cossman 1897
†Cylichna angystoma Deshayes 1824
Cylichna attonsa Carpenter 1864
†Cylichna aula Woodring 1928
†Cylichna calvertensis Martin 1904
Cylichna discus Watson 1883
†Cylichna diversilirata Sohl 1964
†Cylichna elliptica Sowerby 1824
†Cylichna faba Kner 1869
Cylichna fantasma Baker and Hanna 1927
†Cylichna greensboroensis Martin 1904
†Cylichna incisa Stephenson 1941
†Cylichna intermissia Sohl 1964
†Cylichna intermissia curta Sohl 1964
†Cylichna jacksonensis Meyer 1886
†Cylichna loismartinae Keen 1943
†Cylichna makanjuolai Adegoke 1977
†Cylichna occulta Mighels and Adams 1842
†Cylichna paupercula Nagao 1928
†Cylichna pessumata Sohl 1964
†Cylichna ramonensis Clark 1918
†Cylichna salbriacensis Peyrot 1932
†Cylichna secalina Shumard 1861
†Cylichna solivaga Maury 1912
†Cylichna subalpina Guembel 1861
†Cylichna takashimaensis Nagao 1928
†Cylichna temblorensis Keen 1943
†Cylichna tenuis Reuss 1845
†Cylichna venusta Clark 1895
G. Cylichnella Gabb 1873
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†Cylichnella atacata Woodring 1928
Cylichnella biplicata Lea 1845
†Cylichnella bitruncata Meyer 1886
†Cylichnella duqmensis Harzhauser 2007
†Cylichnella ovumlacerti Guppy 1874
†Cylichnella stibara Woodring 1970
†Cylichnella triticumtritonis Maury 1917
G. Scaphander Monfort 1810
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†Bulla (Scaphander) elegans Martin 1879
Subg. †Scaphander (Scaphander) Montfort 1810
Scaphander alaskensis Clark 1932
†Scaphander brevicula Philippi 1887
†Scaphander impunctatus Hickman 1980
Scaphander interruptus Dall 1889
†Scaphander jacksonensis Harris and Palmer 1947
†Scaphander javanus Martin 1879
†Scaphander jugularis Conrad 1855
†Scaphander nannus Woodring 1928
†Scaphander oligoturritus Sacco 1897
†Scaphander polysarcus Cossmann and Pissarro 1913
†Scaphander radii Abbass 1967
†Scaphander rarus Wade 1926
†Scaphander remondi Philippi 1887
†Scaphander stewarti Durham 1944
†Scaphander washingtonensis Tegland 1933
†Scaphander washingtonensis gordoni Tegland 1933
Fm. †Philinidae Gray 1850
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G. †Megistostoma Gabb 1864
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†Megistostoma gabbianum Stoliczka 1868
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Invalid names: Megistostoma caminoensis Hanna 1927 [synonym], Megistostoma striata Gabb 1864 [replaced]
Fm. Retusidae Thiele 1925
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G. Retusa Brown 1827
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Subg. Retusa (Coleophysis) Fischer 1883
Subg. Retusa (Cylichnina) Monterasato 1884
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†Cylichnina coelata Deshayes 1862
†Cylichnina petrosa Conrad 1848
†Cylichnina tantilla Anderson and Hanna 1925
†Cylichnina turneri Effinger 1938
†Retusa (Cylichnina) aequiattenuata Eames 1952
†Retusa (Cylichnina) conutus Deshayes 1824
†Retusa (Cylichnina) marylandica Martin 1904
†Retusa (Cylichnina) subspissa Conrad 1848
Retusa bizona Adams 1850
†Retusa claibornensis Aldrich 1911
Retusa obtusa Montagu 1808
†Retusa recta Eames 1952
†Retusa truncatula Bruguiere 1792
†Retusa yaquensis Maury 1917
G. Sulcoretusa Burch 1945
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†Sulcoretusa israelskyi Addicott 1970
Sulcoretusa sulcata d'Orbigny 1841
†Sulcoretusa sulcata lipara Woodring 1928
G. Volvulella Newton 1891
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Subg. Volvulella (Paravolvulella) Harry 1967
Subg. Volvulella (Volvulella) Newton 1891
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†Volvulella (Volvulella) micratracta Brown and Pilsbry 1913
Volvulella (Volvulella) oxytata Bush 1885
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Invalid names: Volvula cercadensis Van Winkle 1921 [synonym], Volvula cylindrica Gabb 1873 [synonym]
†Volvulella (Volvulella) phonicoides Gardner 1938
†Volvulella cannada Ihering 1907
Volvulella cylindrica Carpenter 1865
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†Volvulella (Volvulella) cylindrica parrallela Pilsbry 1917
Invalid names: Volvulella cooperi Dall 1919 [synonym]
†Volvulella gluma Keen 1943
†Volvulella joaquinensis Addicott 1970
†Volvulella meyer Cossman 1893
†Volvulella oxyacrum Cossmann 1889
Volvulella persimilis Mörch 1875
Fm. Scaphandridae Sars 1878
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G. †Ellipsoscapha Stephenson 1941
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†Ellipsoscapha cylindrica Gardner 1916
†Ellipsoscapha mortoni Forbes 1845
†Ellipsoscapha nortonensis Anderson 1958
†Ellipsoscapha skaios Dailey and Popenoe 1966
†Ellipsoscapha sohli Marincovich, Jr. 1993
†Ellipsoscapha striatella Shumard 1861
G. †Micromelo Pilsbry 1895
Invalid names: Aglajidae Pilsbry 1895 [empty], Gastropteridae Swainson 1840 [empty], Philinacea [objective synonym], Philinoglossidae Hertling 1932 [empty]
Superfm. †Runcinoidea Adams and A. 1854
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Invalid names: Ilbiidae Burn 1963 [empty], Runcinidae Adams and A. 1854 [empty]
Invalid names: Acteonoida d'Orbigny 1842 [empty], Cylichnoidea Adams 1850 [empty], Notodiaphanidae Thiele 1931 [empty], Ringiculoidea Philippi 1853 [empty]