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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Astartella symmetrica
Taxonomy
Astartella symmetrica was named by Chen et al. (1974) [Also designed as new by Liu in Gu et al., 1976].
Synonymy list
| Year | Name and author |
|---|---|
| 1974 | Astartella symmetrica Chen et al. p. 302 figs. Pl 158, figs 15, 16 |
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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.
†Astartella symmetrica Chen et al. 1974
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| valve height | 5 | 3.89 | 2.47 | 6.70 | 3.19 | 2.16 |
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| Source: superf = superfamily | |||||
| Reference: Sanchez Roig 1926 | |||||
Age range: base of the Wuchiapingian to the top of the Changhsingian or 259.90000 to 252.17000 Ma
Collections (18 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Capitanian | China (Guangdong) | Astartella symmetrica (113864) | |
| Wuchiapingian | China (Sichuan) | Astartella symmetrica (98078) | |
| Wuchiapingian | China (Guizhou) | Astartella symmetrica (111995 111996 121006 197498) | |
| Wuchiapingian | China (Hunan) | Astartella symmetrica (121731) | |
| Wuchiapingian | China (Chongqing) | Astartella symmetrica (98074) | |
| Wuchiapingian | China (Jiangxi) | Astartella symmetrica (102123 102135) | |
| Changhsingian | China (Guizhou) | Astartella symmetrica (98029 108544 108546 108547 108551 112113 121007 197492) |