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Goniocylindrites
Taxonomy
Goniocylindrites was named by Meek (1863) [Sepkoski's age data: J Bath J Tith-u]. It is not extant. Its type is Cylindrites brevis.
It was assigned to Cephalaspida by Sepkoski (2002); and to Cylindrobullinidae by Gründel and Nützel (2012).
It was assigned to Cephalaspida by Sepkoski (2002); and to Cylindrobullinidae by Gründel and Nützel (2012).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1863 | Goniocylindrites Meek |
| 2002 | Goniocylindrites Sepkoski |
| 2012 | Goniocylindrites Gründel and Nützel p. 35 |
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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. †Goniocylindrites Meek 1863
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†Goniocylindrites bayani Loriol and Pellat 1874
†Goniocylindrites brevis Morris and Lycett 1851
†Goniocylindrites bullatus Morris and Lycett 1851
†Goniocylindrites conulus Buvignier 1852
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Gründel and A. Nützel 2012 | The shell is cylindrical with planispiral or slightly concave spire. The whorls embrace at the adapical edge of the preceding whorls so that the last whorl covers all preceding whorls in lateral view. The previous whorls are visible in apical view only. The aperture is high and narrow and lacks folds. The other characters are close to those of Cylindrobullina. |