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Spergenaspis
Taxonomy
Spergenaspis was named by Brezinski (1987) [Sepkoski's age data: C l Sepkoski's reference number: ZR88]. Its type is Spergenaspis salemi.
It was assigned to Linguaphillipsiinae by Brezinski (1987); to Proetidae by Jell and Adrain (2002); to Proetida by Sepkoski (2002); and to Phillipsiidae by Brezinski (2007).
It was assigned to Linguaphillipsiinae by Brezinski (1987); to Proetidae by Jell and Adrain (2002); to Proetida by Sepkoski (2002); and to Phillipsiidae by Brezinski (2007).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1987 | Spergenaspis Brezinski p. 247 |
| 2002 | Spergenaspis Jell and Adrain p. 477 |
| 2002 | Sperginaspis Sepkoski |
| 2007 | Spergenaspis Brezinski p. 744 |
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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. †Spergenaspis Brezinski 1987
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†Spergenaspis easleyi Brezinski 1987
†Spergenaspis mauvaisensis Hessler 1965
†Spergenaspis salemi Brezinski 1987
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. K. Brezinski 1987 | Smooth isopygous genus with cranidium possessing a broad con- cave-up fixigenae, bell-shaped glabella, broader behind y than in front of it, and large palpebral lobes, located at the base of the glabella. Pygidium smooth with wide border flange; ribs divided by pleural furrow into bands of equal width. |