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Gastropoda - Murchisoniina - Loxonematidae
It was reranked as Spiroecus by Knight et al. (1960), Sepkoski (2002) and Wagner (2017).
It was assigned to Stephanocosmia by Longstaff (1924); to Loxonematidae by Knight et al. (1960); to Neotaenioglossa by Sepkoski (2002); and to Omospirinae by Wagner (2017).
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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.