| 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