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Taxonomy
Hedecardium (Titanocardium) was named by Maxwell (1978) [Sepkoski's age data: T Ol-u T Mi-u-u Sepkoski's reference number: 728,899].
It was reranked as Titanocardium by Sepkoski (2002).
It was assigned to Hedecardium by Maxwell (1978) and Schneider (2002); and to Veneroida by Sepkoski (2002).
It was reranked as Titanocardium by Sepkoski (2002).
It was assigned to Hedecardium by Maxwell (1978) and Schneider (2002); and to Veneroida by Sepkoski (2002).
Subtaxa
Species lacking formal opinion data
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.
Subg. †Hedecardium (Titanocardium) Maxwell 1978
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†Hedecardium (Titanocardium) cantuariense Laws 1933
†Hedecardium (Titanocardium) greyi Hutton 1873
†Hedecardium (Titanocardium) marwicki Maxwell 1978
Diagnosis
No diagnoses are available