Lancelet meaning

lăns'lĭt
Any of various small chordate marine organisms of the subphylum Cephalochordata, having a long thin body with a notochord but no cranium or vertebrae, and usually found buried in sand.
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Any of various small, transparent, fishlike marine organisms of the subphylum Cephalochordata that are related to vertebrates but have a notochord instead of a true backbone. Unlike other primitive chordates, lancelets have a body divided into serially repeated muscular segments.
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Any of a group of primitive marine animals, of subphylum Cephalochordata, having a notochord instead of a backbone.
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