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Rectambitus
Taxonomy
Rectambitus was named by Xu and Grant (1994) [Sepkoski's age data: P Dora Sepkoski's reference number: 1128].
It was assigned to Spirigerellinae by Williams et al. (2002); and to Spiriferida by Sepkoski (2002).
It was assigned to Spirigerellinae by Williams et al. (2002); and to Spiriferida by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1994 | Rectambitus Xu and Grant p. 50 |
| 2002 | Rectambitus Sepkoski |
| 2002 | Rectambitus Williams et al. p. 1544 |
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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. †Rectambitus Xu and Grant 1994
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†Rectambitus spondomarginata Shen et al. 2004
†Rectambitus subpentangulata Xu and Grant 1994
†Rectambitus xui Shen et al. 2004
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 13 | 11.4 | 7.80 | 15.7 | 12.9 | 2.95 |
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| Source: subo = suborder, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Age range: base of the Wuchiapingian to the top of the Changhsingian or 259.51000 to 251.90200 Ma
Collections (9 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Wuchiapingian | Iran | R. sp. (242099 242100 242101 242108) | |
| Wuchiapingian | China (Guangxi) | R. sp. (50025) | |
| Wuchiapingian | China (Guizhou) | R. bisulcatus (120780) | |
| Changhsingian | China (Shaanxi) | Araxathyris subpentangulata, R. bisulcatus (50034) | |
| Changhsingian | China (Hunan) | Araxathyris subpentagulata (31420) R. subpentangulata, R. spondomarginata (52157) |