Fossils of cartilaginous fish with jaws, resembling living sharks, first appeared in the fossil record about 450 million years ago.
(Fossils of cartilaginous fish with jaws; resembling; living sharks) (Fossils of cartilaginous fish with jaws; appeared; L:in the fossil record; T:about 450 million years ago; T:resembling living sharks; T:first)
Fossils of cartilaginous fish with jaws Fossils of cartilaginous fish with jaws
resembling appeared
living sharks
L:in the fossil record T:about 450 million years ago T:resembling living sharks T:first