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Orbiculoidea nucleola
Taxonomy
Orbiculoidea nucleola was named by Liao (1980). Its type specimen is NIGP 43371 and is a mold. Its type locality is Zhongying Section Bed 39 (QZ-27), Qinglong County, which is in a Changhsingian coastal siltstone in China.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1980 | Orbiculoidea nucleola Liao p. 252 figs. Pl 1, figs 10-16 |
| 1984 | Orbiculoidea nucleola Liao figs. Pl 1, fig 3 |
| 2014 | Orbiculoidea nucleola Zhang et al. p. 484 figs. 5A-O |
| 2019 | Orbiculoidea nucleola He et al. p. 211 figs. 9.77a-h,l-o |
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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.
†Orbiculoidea nucleola Liao 1980
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 6.39 | 5.75 | 7.10 | 6.42 | 0.955 |
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| Source: g = genus, o = order, c = class, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004, Hendy 2009 | |||||
Age range: Changhsingian or 254.17000 to 252.17000 Ma
Collections (13 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Changhsingian | China (Chongqing) | Orbiculoidea nucleola (94984 94986) | |
| Changhsingian | China (Guizhou) | Orbiculoidea nucleola (type locality: 112010 112015 145677 145681 145682 145684 145685 145686 163278 163282) | |
| Changhsingian | China (Jiangsu) | Orbiculoidea nucleola (112369) |