Classification of the genus Eumarcia
G. Eumarcia Iredale 1925
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Subg. †Eumarcia (Atamarcia) Marwick 1927
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†Atamarcia crassa Marwick 1927
†Atamarcia curta Hutton 1873
†Eumarcia (Atamarcia) robusta Stilwell and Zinsmeister 1992
†Eumarcia (Atamarcia) sulcifera Marwick 1927
Subg. Eumarcia (Eumarcia) Iredale 1925
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†Eumarcia (Eumarcia) austrolissa Stilwell and Zinsmeister 1992
Subg. †Eumarcia (Opimaria) Marwick 1948
Eumarcia fumigata Sowerby 1853