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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Cyclonema varispirum
Taxonomy
Cyclonema varispirum was named by Twenhofel (1928). It is not extant. Its type locality is Makasti Bay, 79-228 feet from base of formation, which is in a Richmondian carbonate limestone/shale in the English Head Formation of Canada.
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.
†Cyclonema varispirum Twenhofel 1928
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, f = family, superf = superfamily, c = class | |||||
| References: Wagner 2023, Kiessling 2004, Knight et al. 1960, Batten 1984 | |||||
Age range: Richmondian or 449.60000 to 445.50000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Richmondian | Canada (Quebec) | Cyclonema varispirum (type locality: 63667 63675) |