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Spinulothele
Taxonomy
Spinulothele was named by Rowell (1977) [Sepkoski's age data: Cm Boto-l Sepkoski's reference number: 19]. Its type is Siphonotreta dubia.
It was assigned to Acrothelidae by Rowell (1977); to Acrothelinae by Williams et al. (2000); and to Acrotretida by Bengtson (1992), Sepkoski (2002).
It was assigned to Acrothelidae by Rowell (1977); to Acrothelinae by Williams et al. (2000); and to Acrotretida by Bengtson (1992), Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1977 | Spinulothele Rowell pp. 76 - 77 |
| 1992 | Spinulothele Bengtson p. 1030 |
| 2000 | Spinulothele Williams et al. p. 93 |
| 2002 | Spinulothele 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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. J. Rowell 1977 | Acrothelid with slightly lamel- lose concentric growth frills crossed by fine, impersistent ribs. Intersection of the two com- ponents of ornament producing low, radially disposed, spine-like nodes. |
Measurements
No measurements are available
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| Source: f = family, o = order, c = class, uc = unranked clade | |||||
| References: Hendy 2009, Nesnidal et al. 2013, Aberhan et al. 2004 | |||||