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Rhynchonellata - Orthida - Plectorthidae
It was reranked as Orthis (Hebertella) by Reed (1917).
It was assigned to Orthidae by Raymond (1911); to Orthis by Reed (1917); to Plectorthinae by Rõõmusoks (1964) and Wright (1964); to Plectorthidae by Walker (1982), Howe (1988), Williams et al. (2000) and Popov et al. (2000); and to Orthida by Sepkoski (2002).
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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.