Cephalochordata
Cephalochordata (nomen ab Owen anno 1846 factum) sunt Animalia phyli Chordatorum cuius chorda dorsalis a capite (Graece kephale, unde nomen) per totum corpus patet. Huius subphyli familia Branchiostomatidarum recognoscitur.

Branchiostomatidae

Nexus externi

 Azariah, J. 1982. "Cephalochordata." In Synopsis and Classification of Living Organisms, vol. 2, ed. S. P. Parker, 829–830. Novi Eboraci: McGraw-Hill.
 Van der Land, J. 2001. "Cephalochordata." In European Register of Marine Species: A check-list of the marine species in Europe and a bibliography of guides to their identification, ed. M. J. Costello, C. S. Emblow, et R. White, 50. Patrimoines Naturels.

Chordata
Taxa Owen
1846
Subphyla animalium