(Photo courtesy of Stephanie Leco)

Stephanie Leco found the fossil at Petrified Forest National Park.

(Photo courtesy of Stephanie Leco)

Stephanie Leco found a a 200-million-year-old fish jaw bone.

It’s one thing to have an interest in paleontology, it’s another to go on digs and look for fossils. But, it’s something else altogether if you find a 200-million-year-old fish jaw bone. That’s what happened to Stephanie Leco.

Leco, who is a Phoenix resident, was on a dig at the Petrified Forest National Park last month when she found the fossil, which was about the size of her thumbnail.