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Gastropoda - Itieriidae
It was reranked as Favria by Sepkoski (2002) and Gründel and Kollmann (2012).
It was assigned to Phaneroptyxis by Cossmann (1916); to Heterostrophia by Sepkoski (2002); and to Nerineidae by Gründel and Kollmann (2012).
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.