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amphioxus n. 文昌魚 文昌魚 amphioxus n 1: small translucent lancet-shaped burrowing marine animal; primitive forerunner of the vertebrates [synonym: {lancelet}, {amphioxus}] Amphioxus \Am`phi*ox"us\, n. [NL., fr. Gr. 'amfi` ? sharp.]
(Zool.) A fishlike creature ({Amphioxus lanceolatus}), two or three inches long, found in temperature seas; -- also called the {lancelet}. Its body is pointed at both ends. It is the lowest and most generalized of the vertebrates, having neither brain, skull, vertebr[ae], nor red blood. It forms the type of the group {Acrania}, {Leptocardia}, etc. [1913 Webster]
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