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Strophomenata - Productida - Aulostegidae
It was reranked as Taeniothaerus by Muir-Wood and Cooper (1960), Williams et al. (2000), Sepkoski (2002) and Shen et al. (2003).
It was assigned to Productus by Whitehouse (1928); to Aulosteginae by Muir-Wood and Cooper (1960) and Williams et al. (2000); to Strophomenida by Sepkoski (2002); and to Aulostegidae by Shen et al. (2003).
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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.