|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Bivalvia - Cardiida - Cardiidae
It was reranked as Nemocardium (Microcardium) by Vokes (1989) and Schneider (1995).
It was assigned to Nemocardium by Vokes (1989) and Schneider (1995); to Veneroida by Sepkoski (2002); and to Protocardiinae by Vokes (1980), Woodring (1982) and Poutiers (2006).
|Year||Name and author|
|1934||Microcardium Thiele p. 878|
|1980||Microcardium Vokes p. 129|
|1982||Microcardium Woodring p. 645|
|1989||Nemocardium (Microcardium) Vokes p. 124|
|1995||Nemocardium (Microcardium) Schneider p. 339|
|2002||Microcardium Sepkoski, Jr.|
|2002||Tobarum Sepkoski, Jr.|
|2006||Microcardium Poutiers p. 643|
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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.