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Zygostephanus
Taxonomy
Zygostephanus was named by Haeckel (1862) [Sepkoski's age data: J u R]. It is extant.
It was assigned to Acanthodesmiidae by De Wever et al. (2001); and to Nassellaria by Sepkoski (2002).
It was assigned to Acanthodesmiidae by De Wever et al. (2001); and to Nassellaria by Sepkoski (2002).
Species
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1862 | Zygostephanus Haeckel |
| 1892 | Zygostephanus quadrupes Rüst |
| 2001 | Zygostephanus De Wever et al. p. 232 |
| 2002 | Zygostephanus 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. Zygostephanus Haeckel 1862
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Invalid names: Zygostephanus quadrupes Rüst 1892 [nomen dubium]
Diagnosis
No diagnoses are available