| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Placotriplesia
Taxonomy
Placotriplesia is a genus. It is not extant.
It was assigned to Triplesiidae by Williams et al. (2000); and to Orthida by Sepkoski (2002).
It was assigned to Triplesiidae by Williams et al. (2000); and to Orthida by Sepkoski (2002).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2000 | Placotriplesia Williams et al. p. 689 |
| 2002 | Placotriplesia 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
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| valve height | 9 | 3.78 | 2.75 | 5.92 | 3.44 | 1.23 |
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| Source: g = genus, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013, Hendy 2009 | |||||
Collections (12 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Caradoc | Kazakhstan | P. spissa (80206 80209 80210 80212 80215 80217 80218 80222) | |
| Wenlock | USA (Arkansas) | P. praecipta, P. juvenis (26022) | |
| Wenlock | USA (Oklahoma) | P. praecipta (26025) | |
| Homerian | Czechia | P. moera (14098 14101) |