Lancelet

[lɑ:nslit]

解释:

(noun.) small translucent lancet-shaped burrowing marine animal; primitive forerunner of the vertebrates.

戴维斯整理--From WordNet

解释:

(n.) A small fishlike animal (Amphioxus lanceolatus), remarkable for the rudimentary condition of its organs. It is the type of the class Leptocardia. See Amphioxus, Leptocardia.

亨利录入