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Trigoniocardia

Bivalvia - Cardiida - Cardiidae

Taxonomy
Trigoniocardia was named by Dall (1900) [Sepkoski's age data: T Ol-u R]. It is extant.

It was reranked as Corculum (Trigoniocardia) by Oinomikado (1939); it was reranked as Cardium (Trigoniocardia) by Pilsbry and Olsson (1941); it was reranked as Fragum (Trigoniocardia) by Clark and Durham (1946); it was reranked as Cardium (Trigoniocardium) by Richards (1953).

It was assigned to Corculum by Oinomikado (1939); to Fragum by Clark and Durham (1946); to Cardium by Pilsbry and Olsson (1941) and Richards (1953); to Fraginae by Vokes (1980) and Dockery (1982); and to Veneroida by Sepkoski (2002).

Synonymy list
YearName and author
1900Trigoniocardia Dall
1939Corculum (Trigoniocardia) Oinomikado p. 628
1941Cardium (Trigoniocardia) Pilsbry and Olsson p. 9
1946Fragum (Trigoniocardia) Clark and Durham p. 62
1953Cardium (Trigoniocardium) Richards p. 52
1980Trigoniocardia Vokes p. 128
1982Trigoniocardia Dockery p. 72
2002Trigoniocardia 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
CardioniFerussac 1822
RankNameAuthor
CardiidiaFerussac 1822
CardiataFerussac 1822
superorderCardiiformiiFerussac 1822
orderCardiidaFerussac 1822
suborderCardiidinaFerussac 1822
CardioideiFerussac 1822
superfamilyCardioidea(Lamarck 1809)
familyCardiidaeLamarck 1809
Neocardiids
EucardiidsSchneider 1995
subfamilyFraginaeStewart 1930
genusTrigoniocardiaDall 1900

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