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Spiriferellina nuda
Taxonomy
Spiriferellina nuda was named by Cooper and Grant (1976). Its type specimen is USNM 153181b, a shell (Articulated shell), and it is not a trace fossil.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1976 | Spiriferellina nuda Cooper and Grant p. 2706 figs. Pl 709, figs 1-17 |
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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.
†Spiriferellina nuda Cooper and Grant 1976
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 9 | 4.44 | 2.90 | 7.60 | 4.60 | 1.47 |
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| Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Age range: base of the Wordian to the top of the Capitanian or 266.90000 to 259.51000 Ma
Collections (20 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Wordian | USA (Texas) | Spiriferellina nuda (81586 81939 81940 101867 105896 105902 106299) | |
| Capitanian | USA (Texas) | Spiriferellina nuda (81517 81589 81590 81600 81623 81631 81632 81706 101798 101809 102618 105893 105895) |