Classification of Smith 2015
Cl. Echinoidea Leske 1778 [sea urchin]
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Subcl. Cidaroidea Claus 1880
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Or. Cidaroida Claus 1880 [pencil urchin]
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Superfm. Cidaridea Gray 1825
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G. †Plegiocidaris Pomel 1883
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†Plegiocidaris bradfordensis Wright 1857
†Plegiocidaris saemanni Cotteau 1857
Invalid names: Abelleicidaris Vadet 1991 [synonym]
Fm. †Diplocidaridae Gregory 1900
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G. †Diplocidaris
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Invalid names: Diplocidaris desori Wright 1857 [nomen dubium], Diplocidaris wrightii Desor 1855 [nomen dubium]
Fm. †Heterocidaridae Mortensen 1934
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G. †Heterocidaris
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†Heterocidaris wickensis Wright 1861
Invalid names: Heteroechinus Quenstedt 1874 [objective synonym]
Fm. †Miocidaridae Durham and Melville 1957
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G. †Couvelardicidaris Vadet 1991
G. †Panniericidaris Vadet 1991
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G. †Procidaris
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†Procidaris edwardsii Wright 1854
†Procidaris lobatum Wright 1861
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Invalid names: Cidaris crossei Cotteau 1875 [synonym], Miocidaris tenuispina Mortensen 1934 [synonym]
Fm. †Paracidaridae Smith 2015
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G. †Paracidaris
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†Paracidaris florigemma Phillips 1829
†Paracidaris wrightii Desor 1855
Invalid names: Chesniericidaris Vadet 2004 [synonym]
Fm. †Polycidaridae Vadet 1988
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G. †Anisocidaris
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†Anisocidaris bajociensis Cotteau 1875
†Anisocidaris smithii Wright 1857
†Anisocidaris zschokkei Cotteau 1875
Invalid names: Nenoticidaris Vadet 1988 [synonym]
Invalid names: Anisocidaridae Vadet 1999 [synonym], Nenoticidaridae Vadet 1988 [synonym]
Fm. †Rhabdocidaridae Lambert 1900
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G. †Laurenticidaris Vadet 1991
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†Laurenticidaris copeoides Agassiz 1846
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Invalid names: Rhabdocidaris thurmanni regens Whidborne 1883 [synonym]
G. †Rhabdocidaris Desor 1855
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†Rhabdocidaris fowleri Wright 1851
†Rhabdocidaris horrida Agassiz 1840
Invalid names: Callaudicidaris Vadet 1991 [synonym], Dickesicidaris Vadet 1988 [synonym]
Subcl. Euechinoidea Bronn 1860
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Superor. Acroechinoidea Smith 1981
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Or. Aspidodiadematoida Kroh and Smith 2010
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Fm. Aspidodiadematidae Duncan 1889
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Or. Pedinoida Mortensen 1939
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Fm. Pedinidae Pomel 1883
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G. †Diademopsis
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†Diademopsis bonei Wright 1855
†Diademopsis davidsoni Wright 1855
†Diademopsis microgramma Wright 1858
†Diademopsis serialis Agassiz 1838
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Invalid names: Hemipedina bechei Wright 1855 [synonym], Hemipedina bowerbankii Wright 1855 [synonym], Hemipedina tomesii Wright 1861 [synonym]
G. †Hemipedina
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†Hemipedina beaugrandi Rigaux 1882
†Hemipedina etheridgii Wright 1854
†Hemipedina ferryi Cotteau 1860
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Invalid names: Hemipedina chalmasi Cotteau 1883 [synonym], Hemipedina perforata pisolitica Paris 1908 [synonym]
†Hemipedina jardinii Wright 1855
†Hemipedina perforata Wright 1851
†Hemipedina tuberculosa Wright 1855
†Hemipedina woodwardii Wright 1855
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Invalid names: Hemipedina bathonica Cotteau 1882 [synonym], Hemipedina icaunensis Cotteau 1883 [synonym]
G. †Pedina
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†Pedina granulosa Agassiz 1847
†Pedina salteri de Loriol 1871
Invalid names: Hectopedina Thiery 1928 [synonym], Megapedina Lambert and Thiery 1910 [synonym]
G. †Phymopedina
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Invalid names: Hemipedina cunningtoni Wright 1855 [nomen dubium], Hemipedina morrisii Wright 1855 [nomen dubium]
Or. Echinothurioida Claus 1880
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Fm. †Pelanechinidae Groom 1887
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G. †Pseudopedina
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†Pseudopedina bakeri Wright 1854
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Invalid names: Soudetaster martinezae Vadet et al. 2011 [synonym]
†Pseudopedina divionensis Michelin 1854
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Invalid names: Echinopsis smithii Forbes 1856 [synonym], Pseudopedina nodoti Cotteau 1858 [synonym]
Invalid names: Soudetaster Vadet et al. 2011 [synonym]