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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Placosema bigranulosum
Taxonomy
Placosema bigranulosum was named by Peng et al. (2004). Its type specimen is NIGP 138156, a cephalon/head (cranidium), and it is a 3D body fossil.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2004 | Placosema bigranulosum Peng et al. pp. 68 - 69 figs. Plate 26, figures 1-7 |
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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.
†Placosema bigranulosum Peng et al. 2004
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Whittington et al. 1997, Aberhan et al. 2004 | |||||
Age range: base of the Guzhangian to the top of the Paibian or 500.50000 to 494.20000 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Guzhangian | China (Hunan) | Placosema bigranulosum (49187) | |
| Paibian | China (Hunan) | Placosema bigranulosum (49195 126130 126131) | |
| Furongian | South Korea | Placosema bigranulosum (236863 236864 236865) |