| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Birksfeldia circumplicata
Taxonomy
Birksfeldia circumplicata was named by Orchard (1980). It is the type species of Birksfeldia.
Synonymy list
| Year | Name and author |
|---|---|
| 1980 | Birksfeldia circumplicata Orchard |
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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.
†Birksfeldia circumplicata Orchard 1980
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class, subp = subphylum | |||||
| References: Aberhan 1992, Carroll 1988 | |||||
Age range: base of the Cautleyan to the top of the Hirnantian or 449.20000 to 443.10000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kralodvorian | Italy (Sardinia) | Birksfeldia circumplicata (192914) | |
| Pirgu | Sweden | Birksfeldia circumplicata (159344) | |
| Cautleyan | Ireland (Leinster) | Birksfeldia circumplicata (89130) | |
| Hirnantian | Sweden | Birksfeldia circumplicata (159341) |