lancelet

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lance·let

 (lăns′lĭt)
n.
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. Also called amphioxus, cephalochordate.

lancelet

(ˈlɑːnslɪt)
n
(Animals) 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]

lance•let

(ˈlæns lɪt, ˈlɑns-)

n.
any small, lancet-shaped burrowing marine animal of the subphylum Cephalochordata, having a notochord and numerous gill slits. Also called amphioxus.
[1565–75]

lance·let

(lăns′lĭt)
Any of various small, transparent, fish-like animals that live in water and have a structure similar to that of vertebrates, but with a notochord instead of a true backbone. Lancelets are cephalochordates. Also called amphioxus.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.lancelet - small translucent lancet-shaped burrowing marine animallancelet - small translucent lancet-shaped burrowing marine animal; primitive forerunner of the vertebrates
cephalochordate - fish-like animals having a notochord rather than a true spinal column
genus Amphioxus - type genus of the Amphioxidae
References in periodicals archive ?
Lancelets, which are not really fish, split from vertebrates about 520 million years ago, but their genome provides clues about the evolution of vertebrates.
The first volume of the series, published in 1948, covered lancelets, cyclostomes, and sharks.
A list of the lancelets of the world with diagnoses of five new species of Branchiostoma.
Fishes of the Western North Atlantic Part One: Lancelets, Cyclostomes, Sharks.
Helinus lancelets belongs to family Rhamnaceae, and locally called Haldur.
The leaves are alternately arranged, lancelets shaped, 6 to 16 inches, 15 to 40.
The cephalochordates are represented by the lancelets (also known as amphioxus in old literature), with about 29 valid species in two genera: Branchiostoma and Epigonychthys (Poss & Boschung 1996).
Washburn's 13 chapters include discussion of not fewer than 100 species, including ants, bees, caterpillars, cats, chickens, chubs, clams, cockroaches, cows, crabs, crayfish, dogs, dragonflies, earthworms, elephants, flies, frogs, goldfish, grasshoppers, guinea pigs, horseshoe crabs, jellyfish, lancelets, leeches, mice, minnows, monkeys, pigeons, pike, planarians, potato beetles, raccoons, salamanders, sea anemones, sea-urchins, shrimps, silkworms, snails, spiders, tortoises, wasps, water beetles, and (yes) rats.
A sequence analysis of AChEs from 68 species obtained from GenBank also detected C289 in cockroaches, lancelets, rice beetles, bollworms, silkworms, honey bees, moths, and armyworms.
Lancelets and other invertebrates wield a primitive, or innate, immune system.
Both am-mocoete larvae of lampreys and the non-vertebrate chordate lancelets (Cephalochordata) rest on one side of the body.
In Fishes of the western North Atlantic, part 1: lancelets, cyclostomes, and sharks (A.