Back to Medium sized version | Without labels
Cross section through the head of a lancelet (head 1)
Legend:
1 dorsal fin
2 epidermis
3 neural tube
4 notochord
5 myomere
6 myoseptum
7 wheel organ / velum (?)
8 wheel organ (?)
9 transverse muscle
10 metapleural fold
English name: Lancelet
Scientific name: Branchiostoma lanceolatum
Familia: Branchiostomidae
Classis: Cephalochordata
Phylum: Chordata (primitive)
Regnum: Animalia
