Classification of Jagt 2000

Cl. Echinoidea Leske 1778 [sea urchin]
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Or. Calycina Gregory 1900
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G. †Salenocidaris Agassiz 1869
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†Salenocidaris obnupta Schlüter 1892
Or. Echinothurioida Claus 1880
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Fm. Echinothuriidae Thomson 1872
Or. Temnopleuroida Mortensen 1942
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G. †Micropsidia Pomel 1883
Or. Holectypoida Duncan 1889
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G. †Adelopneustes Gauthier 1889
G. †Coenholectypus Pomel 1883
Or. Cassiduloida Agassiz and Desor 1847
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G. †Procassidulus Lambert 1918
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Or. Spatangoida Agassiz 1840 [heart urchin]
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G. †Leymeriaster Lambert and Thiéry 1924
Fm. Schizasteridae Lambert 1905