Branchiostoma lanceolatum
| Branchiostoma lanceolatum | |
|---|---|
| Branchiostoma lanceolatum | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Subphylum: | Cephalochordata | 
| Class: | Leptocardii | 
| Family: | Branchiostomatidae | 
| Genus: | Branchiostoma | 
| Species: | B. lanceolatum | 
| Binomial name | |
| Branchiostoma lanceolatum (Pallas, 1774) | |
| Synonyms | |
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Branchiostoma lanceolatum, the European lancelet or Mediterranean amphioxus is a lancelet in the subphylum Cephalochordata. It is a marine invertebrate with a notochord but no backbone and is used as a model organism to study the evolutionary development of vertebrates.