|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Bivalvia - Arcida - Arcidae
It was reranked as Barbatia (Calloarca) by Maury (1917); it was reranked as Arca (Calloarca) by Olsson (1922).
It was assigned to Barbatia by Maury (1917); to Arca by Olsson (1922); to Arcinae by Vokes (1980); to Arcidae by Woodring (1973) and Todd (2001); and to Arcoida 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.