|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Bivalvia - Cardiida - Mactridae
It was reranked as Spisula (Hemimactra) by Glenn (1904), Olsson (1914) and Gardner (1947).
It was assigned to Spisula by Glenn (1904), Olsson (1914) and Gardner (1947); to Veneroida by Sepkoski (2002); and to Mactridae by Hendy et al. (2008).
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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.