- any of several small, lancet-shaped burrowing marine animals of the subphylum Cephalochordata, having a notochord and bearing structural similarities to both vertebrates and invertebrates.
Origin of lancelet
Also called amphioxus.
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Examples from the Web for lancelet
By "launces" the writer meant what we should now call the lancelet.The Cornwall Coast
Arthur L. Salmon
The lowest of the Vertebrata, the Lancelet (see p. 140), has a larva of this kind.
There is a huge gap between the Lancelet and the true vertebrates.
The Lancelet also differs from the true vertebrates, in that it has no limbs.
The liver in the lancelet is a long diverticulum of the intestine.A Guide to the Study of Fishes, Volume 1 (of 2)
David Starr Jordan
- any of several marine animals of the genus Branchiostoma (formerly Amphioxus), esp B. lanceolatus, that are closely related to the vertebrates: subphylum Cephalochordata (cephalochordates)Also called: amphioxus
C19: referring to the slender shape
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- 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. Also called amphioxus
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