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Polygyrina depressa
Taxonomy
Polygyrina depressa was named by Wang (1980).
Sister species lacking formal opinion data
Synonymy list
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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 depressa Wang 1980
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 3 | 4.63 | 4.00 | 5.50 | 4.50 | 0.764 |
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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 (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Changhsingian | China (Guangxi) | Polygyrina depressa (206158 206159) | |
| Griesbachian | China (Guizhou) | Polygyrina depressa (85127 108555 109663 111976) |