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Sigmocheilus flabellifer
Taxonomy
Dikelocephalus flabellifer was named by Hall and Whitfield (1877). Its type specimen is USNM 24569, a pygidium, and it is a 3D body fossil.
It was recombined as Sigmocheilus flabellifer by Palmer (1965).
It was recombined as Sigmocheilus flabellifer by Palmer (1965).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
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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.
†Sigmocheilus flabellifer Hall and Whitfield 1877
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Invalid names: Sigmocheilus serratus Palmer 1960 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Aberhan et al. 2004, Whittington et al. 1997 | |||||
Age range: Steptoean or 497.00000 to 493.50000 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Steptoean | USA (Nevada) | Sigmocheilus flabellifer (110624 110625 110626 110627 110628 110629 111327 111328 114301) Sigmocheilus serratus (75273) | |
| Dresbachian | Canada (Yukon) | Sigmocheilus flabellifer (55225) |