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Gastropoda - Eucyclidae
It was assigned to Archaeogastropoda by Sepkoski (2002); to Trochidae by Ladd (1982) and Kaim (2004); to Callotrophinae by Bouchet et al. (2005); to Calliotropidae by Bandel (2010); and to Eucyclidae by Ferrari (2014).
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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.