amphioxus


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amphioxus:

see lanceletlancelet,
name for small, fishlike lower chordate (see Chordata), also called amphioxus; it shows many affinities with the vertebrates. There are about 30 lancelet species, most belonging to the genus Brachiostoma (formerly Amphioxus).
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amphioxus

[‚am·fē′äk·səs]
(zoology)
Former designation for the lancelet, Branchiostoma.
References in periodicals archive ?
Xu, Characterization of amphioxus GDF8/GDF11 gene, an archetype of vertebrate MSTN and GDF11, Dev.
Commenting on possible applications of this finding, Somorjai  said: "It also strengthens the position of amphioxus as an important non-vertebrate model for understanding vertebrate evolution and development, with clear implications for biomedical research.
The first animal to carry them remains unknown, but gene sequencing shows that a modern day invertebrate known as amphioxus "is most similar to the original spineless creature before the two rounds of whole genome duplication," MacKintosh said.
A cartilaginous rod found in vertegbrate embryos, running between the primitive vertebrates such as the lancelet or Amphioxus.
Pax-Six-Eya-Dach network during amphioxus development: conservation in vitro but context specificity in vivo (author abstract).
The new Chengjiang species have a number of features not seen in amphioxus or other invertebrate chordates.
Para el nombre generico y comun, en innumerables estudios se encuentra el nombre de "Amphioxus", para designar a todas las lancetas o para un genero tipico, a pesar que esta universalmente aceptado el hecho de que Amphioxus es una homonimia estricta de Branchiostoma.
Off Tankerness on Orkney, the government said that the prehistoric 'faceless and brainless' amphioxus fish was recorded.
Along its abdomen, the creature has V-shaped segments that closely resemble the stacked muscle blocks in primitive living chordates such as amphioxus.
A neurotrophic herpes virus infecting the gastropod, abalone, shares ancestry with oyster herpes virus and a herpes virus associated with amphioxus genome.