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Taxonomy
Mercimonia was named by Dall (1902) [Sepkoski's age data: T Eo T Mi]. It is not extant.
It was reranked as Marcia (Mercimonia) by Durham (1944) and Squires (1984).
It was assigned to Tapetinae by Vokes (1980); to Marcia by Durham (1944) and Squires (1984); and to Veneroida by Sepkoski (2002).
It was reranked as Marcia (Mercimonia) by Durham (1944) and Squires (1984).
It was assigned to Tapetinae by Vokes (1980); to Marcia by Durham (1944) and Squires (1984); and to Veneroida by Sepkoski (2002).
Synonymy list
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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.
Diagnosis
No diagnoses are available