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Gemma

Bivalvia - Cardiida - Veneridae

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 Gemminae by Gardner (1943); to Veneridae by Ward and Blackwelder (1987); and to Veneroida by Sepkoski (2002).

Synonymy list
YearName and author
1853Gemma Deshayes p. 112
1943Gemma Gardner p. 135
1987Gemma Ward and Blackwelder p. 130
2002Gemma Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
classBivalvia
Eubivalvia
subclassAutobranchia(Groblen 1894)
infraclassHeteroconchia(Cox 1960)
CardiomorphiFerussac 1822
RankNameAuthor
CardioniFerussac 1822
CardiidiaFerussac 1822
CardiataFerussac 1822
superorderCardiiformiiFerussac 1822
orderCardiidaFerussac 1822
suborderCardiidinaFerussac 1822
Veneroidei(Gray 1854)
VeneroiteiGray 1854
superfamilyVeneroidea(Rafinesque 1815)
familyVeneridaeRafinesque 1815
genusGemmaDeshayes 1853

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