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Cross section through the tail of a lancelet
Legend:
1 dorsal fin
2 epidermis
3 neural tube
4 notochord
5 myomere
6 myoseptum
7 hindgut
8 caudal fin
English name: Lancelet
Scientific name: Branchiostoma lanceolatum
Familia: Branchiostomidae
Classis: Cephalochordata
Phylum: Chordata (primitive)
Regnum: Animalia
