Classification of Nisiyama 1968
Fm. †Clypeidae Lambert 1898
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Fm. Clypeasteridae Agassiz 1836
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G. Clypeaster Lamarck 1801
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†Clypeaster humilis Leske 1778
†Clypeaster japonicus Döderlein 1885
†Clypeaster reticulatus Linnaeus 1758
†Clypeaster saipanicus Cooke 1957
†Clypeaster virescens Döderlein 1885
Fm. Echinolampadidae Gray 1851
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G. Echinolampas Gray 1825
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†Echinolampas alexandri Loriol 1876
†Echinolampas bombos Nisiyama 1968
†Echinolampas yoshiwarai Loriol 1902
Fm. Fibulariidae Gray 1855
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G. Echinocyamus van Phelsum 1774
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†Echinocyamus crispus Mazzetti 1893
†Echinocyamus prostratus Nisiyama 1968
Fm. Cassidulidae Agassiz and Desor 1847
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Fm. †Pliolampadidae Kier 1962
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†Echinolampas oviformis Gmelin 1789
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†Echinolampas oviformis jacquemonti d'Archiac and Haime 1854