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Trilobita - Lichida - Lichidae
It was reranked as Lichas (Arctinurus) by Reed (1902).
It was assigned to Lichas by Reed (1902); to Lichinae by Thomas and Holloway (1988); to Lichida by Sepkoski (2002); to Lichidae by Jell and Adrain (2003); and to Platylichini by Pollitt et al. (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.