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amphioxus

   Also found in: Encyclopedia, Wikipedia, Hutchinson 0.01 sec.
am·phi·ox·us  (mf-kss)
n.
See lancelet.

[amphi- + Greek oxus, sharp; see ak- in Indo-European roots.]

amphioxus [ˌæmfɪˈɒksəs]
n pl -oxi [-ˈɒksaɪ], -oxuses
(Life Sciences & Allied Applications / Animals) another name for the lancelet
[from New Latin: both ends being sharp, from amphi- + Greek oxus sharp]

amphioxus  (mf-kss)
See lancelet.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.amphioxusamphioxus - 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


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? Mentioned in ? References in periodicals archive
 
The earliest chordates presumably resembled amphioxus in being nearly brainless animals that lacked paired eyes and fed by filtering food from the water.
Along its abdomen, the creature has V-shaped segments that closely resemble the stacked muscle blocks in primitive living chordates such as amphioxus.
 
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