n. - 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, vertebrae,
nor red blood. It forms the type of the group Acrania, Leptocardia,
etc.
n. - 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, vertebrae,
nor red blood. It forms the type of the group Acrania, Leptocardia,
etc.