Classification of Linder et al. 1988

Cl. Echinoidea Leske 1778 [sea urchin]
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Or. Arbacioida Gregory 1900
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Fm. Arbaciidae Gray 1855
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G. Arbacia Gray 1835
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Arbacia abiquaensis Linder et al. 1988
Arbacia lixula Linnaeus 1758
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Invalid names: Arbacia pustulosa Leske 1778 [synonym]
Or. Clypeasteroida Agassiz 1836 [sand dollar]
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Fm. Echinarachniidae Lambert and Thiéry 1914
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G. †Kewia Nisiyama 1935
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Kewia blancoensis Kew 1920
Kewia marquamensis Linder et al. 1988
Subor. †Phymosomatoida Mortensen 1904
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Fm. †Phymosomatidae Pomel 1883
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G. Glyptocidaris Agassiz 1853
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Fm. Stomechinidae Pomel 1883
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G. †Stomechinus Desor 1858
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Stomechinus bigranularis Lamarck 1816
Stomechinus dissimilaris Linder et al. 1988
Or. Salenioida Delage and Hérouard 1903
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Fm. Saleniidae Agassiz 1838
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G. Salenia Gray 1835
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Salenia cascadensis Linder et al. 1988
Salenia scutigera Munster 1826
Or. Temnopleuroida Mortensen 1942
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G. †Gagaria Duncan 1889
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Gagaria crenularis Linder et al. 1988
Gagaria venustula Duncan and Sladen 1884
Fm. Toxopneustidae Troschel 1872
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G. Lytechinus Agassiz 1863
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Lytechinus baldwini Linder et al. 1988
Lytechinus variegatus Lamarck 1816