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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
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 Veneroida by Sepkoski (2002); and to Hedecardium by Maxwell (1978), Schneider (2002).
It was reranked as Titanocardium by Sepkoski (2002).
It was assigned to Veneroida by Sepkoski (2002); and to Hedecardium by Maxwell (1978), Schneider (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
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Todd 2001, Aberhan et al. 2004 | |||||
Age range: base of the Late/Upper Oligocene to the top of the Lillburnian or 27.30000 to 13.05000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Oligocene | New Zealand | Hedecardium greyi (45026) | |
| Late/Upper Oligocene | New Zealand (Central Otago) | Cardium greyi (35126 35127) | |
| Late/Upper Oligocene | New Zealand | Hedecardium cantuariense (67600) | |
| Altonian | New Zealand | Hedecardium cantuariense (67901) | |
| Lillburnian | New Zealand (South Island) | Hedecardium marwicki (205323) |