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Taxonomy
Gemma was named by Deshayes (1853) [Sepkoski's age data: T Eo-l R Sepkoski's reference number: 914]. It is extant.
It was assigned to Veneridae by Ward and Blackwelder (1987); to Veneroida by Sepkoski (2002); and to Gemminae by Gardner (1943) and Bouchet et al. (2010).
It was assigned to Veneridae by Ward and Blackwelder (1987); to Veneroida by Sepkoski (2002); and to Gemminae by Gardner (1943) and Bouchet et al. (2010).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1853 | Gemma Deshayes p. 112 |
| 1943 | Gemma Gardner p. 135 |
| 1987 | Gemma Ward and Blackwelder p. 130 |
| 2002 | Gemma Sepkoski |
| 2010 | Gemma Bouchet et al. |
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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.
G. Gemma Deshayes 1853
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†Gemma cravenensis Gardner 1943
Gemma gemma Totten 1834
†Gemma magna Dall 1903
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†Gemma magna majorina Gardner 1943
†Gemma magna striata Richards 1943
†Gemma magna virginiana Dall 1903
†Gemma magna insulcata Gardner 1943
†Gemma sanctimauricensis Harris 1919
†Gemma verdevilla Gardner 1943
Diagnosis
No diagnoses are available