Skeleton of Branchiostoma (With Diagram) | Chordata | Zoology
In Branchiostoma, exoskeleton is not found. But a few endoskeletal structures are present which are not cartilaginous or bony. Notochord: There is a cylindrical and tapering notochord at both the ends, remarkable for its extension from the tip of the rostrum to the end of the tail. It lies immediately above the alimentary canal and between the left and right [...]