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Tergomya - Archinacellida - Metoptomatidae
It was reranked as Palaeoscurria (Calloconus) by Perner (1903).
It was assigned to Palaeoscurria by Perner (1903); to Archaeophialinae by Knight and Yochelson (1960); to Archaeophialidae by Starobogatov (1970); to Scenellidae by Runnegar and Jell (1976); to Helcionelloida by Sepkoski (2002); and to Metoptomatidae by Horný (1963) and Wagner (2017).
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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.