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Apycnodiscus
Taxonomy
Apycnodiscus was named by Smith and Paul (1982) [Sepkoski's age data: O Ashg-l]. Its type is Apycnodiscus decussatum. It was considered monophyletic by Smith and Paul (1982).
It was assigned to Cyclocystoididae by Smith and Paul (1982); and to Isorophida by Sepkoski (2002).
It was assigned to Cyclocystoididae by Smith and Paul (1982); and to Isorophida by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1982 | Apycnodiscus Smith and Paul |
| 2002 | Apycnodiscus 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.
G. †Apycnodiscus Smith and Paul 1982
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†Apycnodiscus decussatum Begg 1934
†Apycnodiscus insularis Regnell 1945
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class, p = phylum | |||||
| References: Kiessling 2004, Aberhan 1992 | |||||
Age range: base of the Maysvillian to the top of the Wenlock or 450.20000 to 427.40000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Edenian - Maysvillian | USA (Illinois, Iowa) | A. sp. (23521) | |
| Edenian - Maysvillian | USA (Minnesota) | A. sp. (23409) | |
| Maysvillian | USA (Iowa) | A. sp. (13261) | |
| Maysvillian | USA (Minnesota) | A. sp. (23410) | |
| Maysvillian | USA (Illinois, Iowa) | A. sp. (23522) | |
| Wenlock | Sweden | Cyclocystoides insularis (162441) |