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Cephalochordata (lancelet)

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).

Synonymy list
YearName and author
1866Cephalochordata Haeckel
1998Cephalochordata Zrzavy et al.
1999Cephalochordata Dineley and Metcalf p. 11
2002Cephalochordata Sepkoski
2011Cephalochordata Edgecombe et al. p. 153 figs. Fig. 1
2011Cephalochordata Zhang
2012Cephalochordata Nielsen p. 358
2016Cephalochordata Brusca et al.
2016Cephalochordata Nelson et al. p. 15

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EubilateriaAx 1987
phylumChordataHaeckel 1874
subphylumCephalochordata(Haeckel 1866)
subphylumCephalochordata(Haeckel 1866)

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]
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G. Amphioxus Yarrell 1836
G. Branchiostoma Costa 1834
G. Dolichorhynchus Willey 1901
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
Cl. Leptocardii Müller 1845
G. Amphioxides Gill 1895
No diagnoses are available
No measurements are available
Locomotion: actively mobilep
Created: 2004-02-29 10:26:37
Modified: 2004-02-29 12:26:37
Source: p = phylum
Reference: Kiessling 2004

Age range

Maximum range based only on fossils: Atdabanian or 520.00000 to 516.00000 Ma
Minimum age of oldest fossil (stem group age): 516.0 Ma

Collections (2 total)

Time interval Ma Country or state Original ID and collection number
Atdabanian520.0 - 516.0China (Yunnan) Cathaymyrus haikouensis (68083) Yunnanozoon sp. (86930)