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Dawsonoceras fenestratum
Taxonomy
Cycloceras fenestratum was named by Eichwald (1860). It is not extant.
It was recombined as Dawsonoceras fenestratum by Kröger and Isakar (2006).
It was recombined as Dawsonoceras fenestratum by Kröger and Isakar (2006).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1860 | Cycloceras fenestratum Eichwald p. 1231 |
| 1880 | Orthoceras funiforme Angelin |
| 1962 | Cedarvilleoceras porkunense Balashov and Zhuravleva |
| 2006 | Dawsonoceras fenestratum Kröger and Isakar |
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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.
†Dawsonoceras fenestratum Eichwald 1860
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Invalid names: Dawsonoceras funiforme Angelin 1880 [synonym], Dawsonoceras porkunense Balashov and Zhuravleva 1962 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Aberhan et al. 2004, Kiessling 2004 | |||||
Age range: base of the Katian to the top of the Hirnantian or 452.80000 to 443.10000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Katian | Sweden (Dalarna) | Dawsonoceras fenestratum (124939) | |
| Katian - Hirnantian | Sweden (Dalarne) | Dawsonoceras fenestratum (73413) | |
| Porkuni | Estonia (Lääne-Viru) | Dawsonoceras fenestratum (87313) |