lancelet
/ˈlɑːnslɪt/noun
1- a small elongated marine invertebrate that resembles a fish but lacks jaws and obvious sense organs. Lancelets possess a notochord and are among the most primitive chordates.文昌鱼。
1.1
- Subphylum Cephalochordata, phylum Chordata: several species, including amphioxus.头索动物亚门, 脊索动物门：数种, 包括文昌鱼。
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