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Sievertsia
Taxonomy
Sievertsia was named by Smith and Paul (1982) [Sepkoski's age data: O Cara-u D Give]. Its type is Sievertsia devonica. 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 | Sievertsia Smith and Paul pp. 648 - 650 |
| 2002 | Sievertsia 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. †Sievertsia Smith and Paul 1982
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†Sievertsia concava Smith and Paul 1982
†Sievertsia devonica Sieverts-Doreck 1951
†Sievertsia gotus Prokop 1980
†Sievertsia tartas Prokop 1980
Diagnosis
No diagnoses are available