Fossils from this oldest class of vertebrates foun
Fossils from this oldest class of vertebrates found in central Australia date the earliest presence of these animals to five hundred million years ago. Their evolution was significant in the development of the inner ear, complex eye muscles, paired limbs, and cellular bone. For 10 points—name this class of fish, now represented by lampreys and hagfishes, known for the lack of a jawbone.
Fossils from this oldest class of vertebrates found in central Australia date the earliest presence of these animals to five hundred million years ago.
{Agnatha}