| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Species
Species lacking formal opinion data
Entered
by J. Sepkoski on 2003-01-23
Synonymy list
| Year | Name and author |
|---|---|
| 2002 | Palaeacmea Sepkoski |
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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
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Bambach et al. 2007 | |||||
Age range: base of the Floian to the top of the Darriwilian or 477.10000 to 458.20000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Floian | Russian Federation (Siberia) | P. humilis (206297) | |
| Darriwilian | Russian Federation (Siberia) | P. sp. (206300) |