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Cephalopoda - Agoniatitida - Agoniatitidae
It was reranked as Agoniatites (Paraphyllites) by Chlupac and Turek (1983).
It was assigned to Agoniatites by Chlupac and Turek (1983); to Anarcestida by Sepkoski (2002); to Agoniatitinae by Korn and Klug (2002); and to Agoniatitidae by Arkell et al. (1957) and Korn (2006).
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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.