Lancelet
[lɑ:nslit]
Definition
(noun.) small translucent lancet-shaped burrowing marine animal; primitive forerunner of the vertebrates.
Inputed by Davis--From WordNet
Definition
(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.
Edited by Henry