| Cephalochordata | |
|---|---|
| Scientific classification | |
| Domain: | Eukarya |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Subphylum: | Cephalochordata |
Cephalochordata is a chordate subphylum defined by the presence of a notochord that persists throughout life. It is represented in the modern oceans by the lancelets. Fossil species are also known from the Chengjiang biota.[citation needed]
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