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Gastropoda - Ranellidae
It was reranked as Cymatium (Septa) by Ladd (1977), Squires (1983), Squires (1984), Todd (2001) and Beu (2005).
It was assigned to Neotaenioglossa by Sepkoski (2002); to Cymatium by Ladd (1977), Squires (1983), Squires (1984), Todd (2001) and Beu (2005); and to Ranellinae by Beu (2010).
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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.