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Bivalvia - Pectinida - Pectinidae
It was Pecten (Placopecten) by Dall (1898); it was reranked as Placopecten by Ward (1992), Sepkoski (2002) and Rosenberg (2005).
It was assigned to Pecten by Dall (1898); to Chlamys by Verrill (1897), Gardner (1943) and Hassan (1953); to Pterioida by Sepkoski (2002); and to Pectinidae by Ward (1992) and Rosenberg (2005).
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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.