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Quadrosiphogonuchites
Taxonomy
Quadrosiphogonuchites was named by Chen (1982) [Sepkoski's age data: V N-Da Cm Tomm-u Sepkoski's reference number: 1006]. It is not extant.
It was assigned to Scyphozoa by Sepkoski (2002); and to Siphogonuchitidae by Parkhaev and Demidenko (2010).
It was assigned to Scyphozoa by Sepkoski (2002); and to Siphogonuchitidae by Parkhaev and Demidenko (2010).
Species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1982 | Quadrosiphogonuchites Chen p. 254 |
| 1982 | Paranabarites Jiang p. 172 |
| 1984 | Paraconularoides He p. 28 |
| 2002 | Quadrosiphogonuchites Sepkoski |
| 2010 | Quadrosiphogonuchites Parkhaev and Demidenko p. 971 |
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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. †Quadrosiphogonuchites Chen 1982
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Invalid names: Paraconularoides He 1984 [synonym], Paranabarites Jiang 1982 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. Y. Parkhaev and Y. Demidenko 2010 | "Sclerites straight or curved, narrow, pyramidal, conical or prismatic, with subquadrate cross-section, with four prominent facets. External ornamentation absent or represented by longitudinal straight or curved ribs." |
Measurements
No measurements are available
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| Source: uc = unranked clade | |||||
| Reference: Hendy et al. 2009 | |||||
Age range: Nemakit-Daldynian or 538.80000 to 525.50000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Nemakit-Daldynian | China (Sichuan) | Q. antiquus (232840) Q. antiquus, Q. quadratus (232841) Q. quadratus (232842) |