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Gastropoda - Trochidae
It was reranked as Teinostoma (Ethalia) by Dall (1889).
It was assigned to Teinostoma by Dall (1889); to Umboniinae by MacNeil (1960) and Wilson (1993); and to Archaeogastropoda by Sepkoski (2002).
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.