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Syncyclonema hallii
Taxonomy
Pecten hallii was named by Gabb (1861).
It was recombined as Syncyclonema hallii by Speden (1970); it was recombined as Syncyclonema hallii by Speden (1970).
It was recombined as Syncyclonema hallii by Speden (1970); it was recombined as Syncyclonema hallii by Speden (1970).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1855 | Pecten rigida Hall and Meek pp. 381- figs. PL 2. Gif 4, a, b, c |
| 1856 | Pecten rigida Hall and Meek |
| 1861 | Pecten hallii Gabb p. 214 |
| 1864 | Syncyclonema rigida Meek p. 31 |
| 1970 | Syncyclonema hallii Speden p. 87 figs. Plate 17, figs. 12-17; Plate 18, figs. 1-8 |
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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.
†Syncyclonema hallii Gabb 1861
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Invalid names: Pecten rigida Hall and Meek 1855 [replaced]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, f = family, o = order | |||||
| References: Aberhan et al. 2004, Kiessling 2004 | |||||
Age range: Campanian or 83.60000 to 72.20000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Cretaceous | USA (Nebraska) | Pecten rigida (235728) | |
| Campanian | USA (South Dakota) | Pecten rigida (235524) | |
| Campanian | USA (Wyoming) | Syncyclonema rigida (105717) | |
| Late/Upper Campanian | Canada (Alberta) | Syncyclonema hallii (82638) |