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Shantungia
Taxonomy
Shantungia was named by Walcott (1905) [Sepkoski's age data: Cm Dres-l Sepkoski's reference number: 464]. It is not extant. Its type is Shantungia spinifera.
It was corrected as Shangtungia by Jell and Adrain (2002); it was misspelled as Shangtungia by Sepkoski (2002) and Ren et al. (2017).
It was assigned to Ptychopariida by Sepkoski (2002); and to Damesellidae by Chu (1959), Jell and Adrain (2002) and Ren et al. (2017).
It was corrected as Shangtungia by Jell and Adrain (2002); it was misspelled as Shangtungia by Sepkoski (2002) and Ren et al. (2017).
It was assigned to Ptychopariida by Sepkoski (2002); and to Damesellidae by Chu (1959), Jell and Adrain (2002) and Ren et al. (2017).
Species
S. spinifera (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1905 | Shantungia Walcott |
| 1959 | Shantungia Chu |
| 2002 | Shangtungia Jell and Adrain p. 444 |
| 2002 | Shangtungia Sepkoski |
| 2017 | Shantungia Ren et al. pp. 424 - 426 |
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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 | |
|---|---|---|
| G.-Y. Ren et al. 2017 | Axial furrow wide and distinct. Cranid-ium subrhomboidal in outline exclusive of librigenae, and withfrontal projection as a long spine, a short club. Glabella trun-cated conical with obscure lateral furrows. Fixigenae moderatelywide, strongly convex. Palpebral lobe from moderately longto long, located posteriorly; anterior border furrow narrow andshallow, straight or slightly bending forward. Preglabellar fieldnarrow to absent. Librigenae narrow, with a very long genal spine. Thorax of 12 segments. Pygidium transversal semicircu-lar in outline, with 6 pairs of marginal spines, of which the lastpair is broader and triangular. Axis narrow and short, with 4–5axial rings and a short postaxial ridge. Pygidial border wider,without distinct border furrow. |
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Whittington et al. 1997, Aberhan et al. 2004 | |||||
Age range: Guzhangian or 500.50000 to 497.00000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Miaolingian | China | S. spinifera (228206) | |
| Guzhangian | China (Liaoning) | S. elongata (129894) | |
| Guzhangian | China (Shandong) | S. spinifera (129897) |