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Pikaia
Taxonomy
Pikaia was named by Walcott (1911) [Sepkoski's age data: Cm mMid-u Sepkoski's reference number: 449]. Its type is Pikaia gracilens. It is the type genus of Pikaidae.
It was assigned to Pikaidae by Walcott (1911); to Cephalochordata by Sepkoski (2002); and to Chordata by Bambach et al. (2007).
It was assigned to Pikaidae by Walcott (1911); to Cephalochordata by Sepkoski (2002); and to Chordata by Bambach et al. (2007).
Species
P. gracilens (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1911 | Pikaia Walcott p. 131 |
| 2002 | Pikaia Sepkoski |
| 2007 | Pikaia Bambach et al. p. S83 |
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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