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Trilobita - Lichida - Lichidae
It was reranked as Rontrippia by Sepkoski (2002) and Jell and Adrain (2003).
It was assigned to Lichida by Sepkoski (2002); to Lichidae by Jell and Adrain (2003); and to Platylichas by Thomas and Holloway (1988) and Pollitt et al. (2005).
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.