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Cephalopoda - Ceratitida
It was corrected as Xenodiscoidea by Shigeta and Zakharov (2009), Korn and Ghaderi (2016) and Zhou (2017).
It was assigned to Ceratitida by Tozer (1981), Tozer (1994) and Shigeta and Zakharov (2009); and to Paraceltitina by Korn (2006), Korn and Ghaderi (2016) and Zhou (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.