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Spinomarginifera janus
Taxonomy
Krotovia janus was named by Huang (1932). It is a 3D body fossil. Its type locality is Wumats'ao, Locality TW54, Kueiyang-hsien, which is in a Wuchiapingian marine horizon in China.
It was recombined as Spinomarginifera janus by Zhang and Jin (1961), Jin and Hu (1978), Wang et al. (1982), Campi et al. (2005), Shen et al. (2017).
It was recombined as Spinomarginifera janus by Zhang and Jin (1961), Jin and Hu (1978), Wang et al. (1982), Campi et al. (2005), Shen et al. (2017).
Synonymy list
| Year | Name and author |
|---|---|
| 1932 | Krotovia janus Huang p. 55 figs. Pl 4, figs 5,6 |
| 1933 | Krotovia janus Huang |
| 1961 | Spinomarginifera janus Zhang and Jin p. 413 figs. Pl 4, figs 19-21 |
| 1978 | Spinomarginifera janus Jin and Hu p. 118 figs. Pl 2, figs 1-6 |
| 1982 | Spinomarginifera janus Wang et al. p. 219 figs. Pl 87, fig 6; pl 92, fig 4 |
| 2005 | Spinomarginifera janus Campi et al. p. 113 figs. Pl 1, figs N, S-U, W, X |
| 2017 | Spinomarginifera janus Shen et al. p. 706 |
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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.
†Spinomarginifera janus Huang 1932
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: subo = suborder, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004, Williams et al. 2000 | |||||
Age range: base of the Roadian to the top of the Wuchiapingian or 274.40000 to 254.14000 Ma
Collections (8 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Roadian | China (Jiangxi) | Spinomarginifera janus (100093) | |
| Wordian | China (Anhui) | Spinomarginifera janus (109852) | |
| Capitanian | Malaysia | Spinomarginifera janus (105035) | |
| Capitanian | China (Zhejiang) | Spinomarginifera janus (101617) | |
| Wuchiapingian | China (Guizhou) | Krotovia janus (type locality: 110977 111056) | |
| Wuchiapingian | China (Anhui) | Spinomarginifera janus (120028 120117) |