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Tribrachia
Taxonomy
Tribrachia was named by Schubert (1912) [Sepkoski's age data: J Call K Maes Sepkoski's reference number: 148]. It is the type genus of Nodosariidae. It was considered monophyletic by Loeblich and Tappan (1950).
It was assigned to Nodosariidae by Loeblich and Tappan (1950); and to Foraminiferida by Sepkoski (2002).
It was assigned to Nodosariidae by Loeblich and Tappan (1950); and to Foraminiferida by Sepkoski (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1912 | Tribrachia Schubert |
| 1950 | Tribrachia Loeblich and Tappan p. 15 |
| 2002 | Tribrachia Sepkoski |
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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. †Tribrachia Schubert 1912
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. R. Loeblich and H. Tappan 1950 | Schubert described the genus Tribrachia in 1912, for the tri-radiate frondicularian Foraminifera, but cited no species. As the species Tribrachia inelegans Loeblich and Tappan, here described, is the first species to be published in connection with the generic name Tribrachia, it thus becomes the genotype. Test free, elongate, tapering triangular in speciation, angles truncate; about six chambers, each trifoliate in section, with sides of each radius nearly parallel, chambers increasing in breadth as added but only slightly in height; sutures distinct, depressed, very highly arched near the central portion of the test, curving far backward toward the proloculus at the angles; wall calcareous, hyaline, surface smooth; aperture terminal, radiate. |
Measurements
No measurements are available
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| Source: f = family, o = order | |||||
| Reference: Kiessling 2004 | |||||
Collections
No collection or age range data are available