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Gastropoda - Euomphalina - Ophiletidae
It was assigned to Euomphaloidea by Knight et al. (1960); to Euomphalacea by Yochelson (1977); to Ophiletidae by Morris and Cleevely (1981) and Rohr and Measures (2001); to Euomphalina by Sepkoski (2002); and to Euomphalidae by Linsley and Kier (1984) and Rohr et al. (2003).
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.