http://www.newsweek.com/400-million-year-old-ancestor-dinosaurs-humans-and-bony-fish-discovered-954474

Paleontologists have discovered fossilized remains of the world’s oldest bony fish, which swam the Devonian seas 400 million years ago.

As the earliest known bony fish, “Ligulalepis” is closely related to our own ancestors. A group of animals called osteichthians have bony skeletons and jaws, and include many modern fish and all amphibians, reptiles, birds and mammals. As Ligulalepis is near the bottom of the branch of osteichthians, it is more or less an ancestor of humans. And sheep. And salamanders. 98 percent of living vertebrates sprung from this branch of the tree of life.