| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Polygyrina sichuanensis
Taxonomy
Polygyrina sichuanensis was named by Li (1989).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1989 | Polygyrina sichuanensis Li p. 204 figs. Pl 29, figs 20,21 |
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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.
†Polygyrina sichuanensis Li 1989
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 3.79 | 3.60 | 4.00 | 3.80 | 0.283 |
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| Source: superf = superfamily, o = order | |||||
| Reference: Bambach et al. 2007 | |||||
Age range: base of the Changhsingian to the top of the Griesbachian or 254.14000 to 250.50000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Changhsingian - Griesbachian | China (Sichuan) | Polygyrina sichuanensis (48944) |