cephalochordate


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ceph·a·lo·chor·date

 (sĕf′ə-lə-kôr′dāt′)
n.

[From New Latin Cephalochordāta, subphylum name : cephalo- + Chordāta, chordate phylum; see chordate.]

ceph′a·lo·chor′date adj.

cephalochordate

(ˌsɛfələʊˈkɔːdeɪt)
n
(Animals) any chordate animal of the subphylum Cephalochordata, having a fishlike body and no vertebral column; lancelet
adj
(Animals) of, relating to, or belonging to the Cephalochordata

ceph·a·lo·chor·date

(sĕf′ə-lə-kôr′dāt′)
Any of various primitive chordate animals that lack a true vertebral column, having a notochord instead. The lancelets are cephalochordates.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.cephalochordate - fish-like animals having a notochord rather than a true spinal columncephalochordate - fish-like animals having a notochord rather than a true spinal column
chordate - any animal of the phylum Chordata having a notochord or spinal column
amphioxus, lancelet - small translucent lancet-shaped burrowing marine animal; primitive forerunner of the vertebrates
References in periodicals archive ?
The amphioxus genome illuminates vertebrate origins and cephalochordate biology.
sup][13] The MHC locus has been found in all jawed vertebrates, however, the proto-MHC could trace back to the cephalochordate (amphioxus) and jawless vertebrate lineages.
In muddy sediments the cephalochordate remains on the sediment surface.
It will, therefore, be important to resolve the main course of cephalochordate evolution by further phylogenetic analyses with nuclear genes and by sequencing the genome from a species of Asymmetron.
2007)--that is, the cephalochordate lineage has evolved from a laterally asymmetric body to a symmetric body.
The cephalochordate notochord is one example of an evolutionary novelty because it is made up of muscle cells that are innervated through contact with the ventral aspect of the nerve cord (Flood, 1975).
We now report that the limited taxonomic distribution of animals with endogenous GFPs may be partially due to inadequate sampling efforts, because we have found such molecules in the cephalochordate amphioxus.
The enteropneust and cephalochordate pharynx share serially paired gill slits in the pharynx that are framed on either side by collagenous gill arches, and parted down the middle by a secondary gill (or tongue) bar.
In addition an InsR-homolog sequence isolated, so far, from one cephalochordate, Branchiostoma lanceolatum, as well as InsRs, IGF-I-Rs, or InsR-homologs from selected vertebrates (human, mouse and rat) were highly similar to the sponge sequences.