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Taxonomy
Trigonucula was named by Ichikawa (1949) [Sepkoski's age data: Tr Carn Tr u Sepkoski's reference number: 159]. Its type is Trigonucula sakawana.
It was assigned to Nuculoida by Sepkoski (2002); and to Nuculidae by Vokes (1980) and Ros-Franch et al. (2014).
It was assigned to Nuculoida by Sepkoski (2002); and to Nuculidae by Vokes (1980) and Ros-Franch et al. (2014).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1949 | Trigonucula Ichikawa p. 2 |
| 1980 | Trigonucula Vokes p. 2 |
| 2002 | Trigonucula Sepkoski |
| 2014 | Trigonucula Ros-Franch 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. †Trigonucula Ichikawa 1949
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Subg. †Trigonucula (Gonionucula) Hautmann et al. 2011
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†Trigonucula (Gonionucula) aciloides Hautmann et al. 2011
†Trigonucula goniocostata Hautmann 2001
†Trigonucula sakawana Ichikawa 1949
Diagnosis
No diagnoses are available