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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Polydesmia
Taxonomy
Polydesmia was named by Lorenz (1906).
It was assigned to Polydesmiidae by Teichert et al. (1964), Crick (1981); and to Actinocerida by Flower (1957), Sepkoski (2002).
It was assigned to Polydesmiidae by Teichert et al. (1964), Crick (1981); and to Actinocerida by Flower (1957), Sepkoski (2002).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1906 | Polydesmia Lorenz |
| 1957 | Polydesmia Flower |
| 1964 | Polydesmia Teichert et al. p. 203 |
| 1981 | Polydesmia Crick p. 227 |
| 2002 | Polydesmia Sepkoski |
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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.
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Aberhan et al. 2004, Kiessling 2004 | |||||
Age range: base of the Arenig to the top of the Late/Upper Llanvirn or 477.10000 to 458.20000 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Dawan | Mongolia | P. zuezshanensis (157192) | |
| Arenig | South Korea (Kangweondo (Gangwon-do)) | P. canaliculata (89515) | |
| Arenig | China (ShanDong) | P. sp. (20775) | |
| Arenig | China (LiaoNing) | P. sp. (20757) | |
| Arenig | China (JiLin) | P. sp. (21147) | |
| Arenig | China (HeBei) | P. sp. (7956 7962 7967 7979) | |
| Llanvirn | China (HeBei) | P. sp. (7994) | |
| Late/Upper Llanvirn | China (HeBei) | P. sp. (7988) |