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Semaeostomeae
Taxonomy
Semaeostomatida was named by Agassiz (1862). It is extant.
It was corrected as Semaeostomeae by Van Iten et al. (2014) and Pates et al. (2021).
It was assigned to Discomedusae by Van Iten et al. (2014); and to Scyphozoa by Sepkoski (2002) and Pates et al. (2021).
It was corrected as Semaeostomeae by Van Iten et al. (2014) and Pates et al. (2021).
It was assigned to Discomedusae by Van Iten et al. (2014); and to Scyphozoa by Sepkoski (2002) and Pates et al. (2021).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1862 | Semaeostomatida Agassiz |
| 2002 | Semaeostomatida Sepkoski |
| 2014 | Semaeostomeae Van Iten et al. |
| 2021 | Semaeostomeae Pates et al. pp. Table S2 |
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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.
Or. Semaeostomeae Agassiz 1862
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class | |||||
| Reference: Aberhan et al. 2004 | |||||
Age range
Maximum range based only on fossils: base of the Middle Cambrian to the top of the Longobardian or 509.00000 to 235.00000 Ma
Minimum age of oldest fossil (stem group age): 497.0 Ma
Minimum age of oldest fossil (stem group age): 497.0 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Cambrian | USA (Utah) | Semaeostomatida indet. (96868) | |
| Longobardian | Spain (Tarragona) | Semaeostomatida indet. (109710) |