| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Trachysphaeridium
Taxonomy
Trachysphaeridium was named by Timofeev (1966). It is not extant.
It was considered a nomen nudum by Andrews (1970).
It was assigned to Acritarcha by Arrouy et al. (2019).
It was considered a nomen nudum by Andrews (1970).
It was assigned to Acritarcha by Arrouy et al. (2019).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1966 | Trachysphaeridium Timofeev |
| 2019 | Trachysphaeridium Arrouy et al. |
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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.
Diagnosis
No diagnoses are available
Measurements
No measurements are available
No ecological data are available
Collections (20 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Tonian | Canada (Northwest Territories) | T. sp. (227958 227959 227960 227961) | |
| Tonian | Svalbard and Jan Mayen | T. sp. (227770) T. sp. A, T. sp. B, T. levis (227777) | |
| Wonokan | Argentina | T. sp. (201680) | |
| Jinnigian | China (Yunnan) | T. rude (106506) | |
| Early/Lower Cambrian | Finland | T. sp. (41196) | |
| Early/Lower Cambrian | Norway (Svalbard Archipelago) | T. timofeevi (148617) | |
| Rhuddanian - Aeronian | Russian Federation (Siberia) | T. sp. (206465 206484) T. universalum (206541 206542 206543 206560) | |
| Telychian | Russian Federation (Siberia) | T. universalum (206347) | |
| Wenlock | Russian Federation (Siberia) | T. universalem (206380 206381) T. universalum (206386) |