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Gastropoda - Settsassiidae
It was reranked as Zygopleura (Katosira) by Haas (1953).
It was assigned to Zygopleura by Haas (1953); to Neotaenioglossa by Sepkoski (2002); to Zygopleuridae by Mitta et al. (2004); and to Settsassiidae by Nützel (2010).
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.