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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Streptelasma cyrtum
Taxonomy
Streptelasma cyrtum was named by Neuman (1969).
Sister species lacking formal opinion data
S. affine, S. affinis, S. anticostiensis, S. elongatum, S. expansum, S. foerstei, S. fragile, S. goniophylloides, S. huronensis, S. integriseptatum, S. latum, S. latusculum, S. linnarsoni, S. nachitaiense, S. obliquum, S. oppletum, S. parisiticum, S. poulseni, S. produndum, S. rutkae, S. scoleciforme, S. shagami, S. sibiricum, S. subregulare, S. subvesiculare, S. trilobatum, S. vagans
Synonymy list
| Year | Name and author |
|---|---|
| 1969 | Streptelasma cyrtum Neuman |
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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.
†Streptelasma cyrtum Neuman 1969
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| Reference: Kiessling 2004 | |||||
Age range: base of the Ashgill to the top of the Hirnantian or 449.50000 to 443.10000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Katian - Hirnantian | Sweden (Dalarne) | Streptelasma cyrtum (73413) | |
| Ashgill | Russian Federation (Yakutiya) | Streptelasma cyrtum (79494 79503 79504) | |
| Ashgill | Mongolia | Streptelasma cyrtum (79587) |