Classification of Peel and Yochelson 1976
G. †Gyronema Ulrich and Scofield 1897
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†Gyronema carinata de Sowerby and Murchison 1839
Fm. †Loxonematidae Koken 1889
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G. †Kjerulfonema Peel and Yochelson 1976
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†Kjerulfonema cancellata de Sowerby and Murchison 1839
†Kjerulfonema quinquecincta Kjerulf 1865
Fm. †Euomphalidae White 1877
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G. †Kiaeromphalus Peel and Yochelson 1976
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†Kiaeromphalus kristianiensis Peel and Yochelson 1976