Classification of Li and Holmer 2004

Or. †Lingulida Waagen 1885
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Fm. †Eoobolidae Holmer et al. 1996
Or. †Acrotretida Kuhn 1949
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Superfm. †Acrotretoidea Schuchert 1893
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Fm. †Acrotretidae Schuchert 1893
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G. †Eohadrotreta Li and Holmer 2004
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†Eohadrotreta zhenbaensis Li and Holmer 2004
†Eohadrotreta zhujiahensis Li and Holmer 2004
G. †Botsfordia Matthew 1891
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†Botsfordia minuta Li and Holmer 2004
G. †Eoobolus Matthew 1902
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†Eoobolus shaanxiensis Li and Holmer 2004
†Eoobolus viridis Cobbold 1921