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Polygyrina zhongzhaiensis
Taxonomy
Polygyrina zhongzhaiensis was named by He et al. (2008). Its type specimen is ZHZ-18-38 and is a 3D body fossil. Its type locality is Zhongzai Section, Bed 18, Liuzhi County, which is in a Griesbachian marine mudstone in the Yelang Formation of China.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2008 | Polygyrina zhongzhaiensis He et al. p. 161 figs. 5A-K |
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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 zhongzhaiensis He et al. 2008
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 3 | 5.46 | 5.00 | 6.50 | 5.00 | 0.866 |
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| Source: superf = superfamily, o = order | |||||
| Reference: Bambach et al. 2007 | |||||
Age range: Griesbachian or 251.90200 to 250.50000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Griesbachian | China (Guizhou) | Polygyrina zhongzhaiensis (type locality: 108555) |