Odd Fish Jawless for 360 Million Years
• LiveScience.comThey lack jaws, eyes and bones, but lampreys and their "primitive" anatomy have survived 360 million years and four major extinctions relatively unaltered. [some species lack eyes]
They lack jaws, eyes and bones, but lampreys and their "primitive" anatomy have survived 360 million years and four major extinctions relatively unaltered. [some species lack eyes]