Ancestors of hagfish are thought to have had the earliest what?
Growth pigment 86400 Haggard skin marine Bones Early Morning Fish Smell
A B C D E F G H
Bone is found only in vertebrates .
Ancestors of hagfish are thought to have the earliest bones.
Ancestors of hagfish are thought to have had the earliest what? (A) Growth (B) pigment (C) 86400 (D) Haggard skin (E) marine (F) Bones (G) Early Morning (H) Fish Smell