Classification of Holmer and Popov 1990

Cl. Lingulata Gorjansky and Popov 1985
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Or. †Acrotretida Kuhn 1949
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Superfm. †Acrotretacea Schuchert 1893
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Fm. †Ceratretidae Rowell 1965
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G. †Ceratreta Bell 1941
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†Ceratreta tanneri Metzger 1922