| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Cephalochordata (lancelet)
Taxonomy
Cephalochordata was named by Haeckel (1866). It is extant. It was considered monophyletic by Brusca et al. (2016).
It was synonymized subjectively with Leptocardia by Jaekel (1911); it was reranked as the unranked clade Cephalochordata by Zhang (2011) and Nielsen (2012); it was reranked as the phylum Cephalochordata by Nielsen (2012); it was reranked as the subphylum Cephalochordata by Dineley and Metcalf (1999), Brusca et al. (2016) and Nelson et al. (2016).
It was assigned to Metazoa by Zhang (2011); to Chordata by Nielsen (2012); and to Chordata by Zrzavy et al. (1998), Dineley and Metcalf (1999), Sepkoski (2002), Edgecombe et al. (2011), Nielsen (2012), Brusca et al. (2016) and Nelson et al. (2016).
It was synonymized subjectively with Leptocardia by Jaekel (1911); it was reranked as the unranked clade Cephalochordata by Zhang (2011) and Nielsen (2012); it was reranked as the phylum Cephalochordata by Nielsen (2012); it was reranked as the subphylum Cephalochordata by Dineley and Metcalf (1999), Brusca et al. (2016) and Nelson et al. (2016).
It was assigned to Metazoa by Zhang (2011); to Chordata by Nielsen (2012); and to Chordata by Zrzavy et al. (1998), Dineley and Metcalf (1999), Sepkoski (2002), Edgecombe et al. (2011), Nielsen (2012), Brusca et al. (2016) and Nelson et al. (2016).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1866 | Cephalochordata Haeckel |
| 1998 | Cephalochordata Zrzavy et al. |
| 1999 | Cephalochordata Dineley and Metcalf p. 11 |
| 2002 | Cephalochordata Sepkoski |
| 2011 | Cephalochordata Edgecombe et al. p. 153 figs. Fig. 1 |
| 2011 | Cephalochordata Zhang |
| 2012 | Cephalochordata Nielsen p. 358 |
| 2016 | Cephalochordata Brusca et al. |
| 2016 | Cephalochordata Nelson et al. p. 15 |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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.
Subph. Cephalochordata Haeckel 1866 [lancelet]
show all | hide all
Or. Amphioxiformes
hide
Fm. Epigonichthyidae
hide
G. Epigonichthys Peters 1877
+
Invalid names: Asymmetron Andrews 1893 [synonym], Heteropleuron Kirkaldy 1895 [synonym], Paramphioxus Haeckel 1893 [synonym]
Invalid names: Asymmetrontidae [synonym]
G. †Cathaymyrus Shu et al. 1996
Diagnosis
No diagnoses are available
Measurements
No measurements are available
|
|||||
|
|
||||
| Source: p = phylum | |||||
| Reference: Kiessling 2004 | |||||
Age range
Maximum range based only on fossils: Atdabanian or 521.00000 to 516.00000 Ma
Minimum age of oldest fossil (stem group age): 516.0 Ma
Minimum age of oldest fossil (stem group age): 516.0 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Atdabanian | China (Yunnan) | Cathaymyrus haikouensis (68083) |