A fishlike animal Amphioxus lanceolatus several inches very long present temperature seas also referred to as the lancelet Its human body is directed at both finishes This is the most affordable and most generalized of the vertebrates having neither mind head vertebraelig nor red blood It types the sort of the team Acrania Leptocardia etc
- little translucent lancet-shaped burrowing marine pet; ancient forerunner of this vertebrates
- A fishlike animal (Amphioxus lanceolatus), two or three ins long, within temperature seas; -- also referred to as the lancelet. Its human anatomy is directed at both ends. It's the cheapest and a lot of generalized of the vertebrates, having neither brain, skull, vertebrae, nor red blood. It forms the kind of the group Acrania, Leptocardia, etc.
(n.) A fishlike animal (lanceolatus), several inches long, present temperature seas; -- also called the lancelet. Its body is directed at both stops. It is the most affordable and most general associated with vertebrates, having neither mind, skull, vertebrae, nor purple bloodstream. It forms the type of the group Acrania, Leptocardia, etc.
In accordance with this view there would be also some probability in favour of regarding the collar nerve-tube of the Enteropneusta as the equivalent of the cerebral vesicle only of Amphioxus and the Ascidian tadpole, and also of the primary forebrain of vertebrates.