UNDATED (AP) — Fossils found by a University of Nebraska-Lincoln student in New Mexico have led to the discovery of a new genus and rodent-like species.  The fossils were found in May 2014.

Then-sophomore Carissa Raymond discovered the fossils in New Mexico’s San Juan Basin, during her first fossil hunt.

She saw a row of small black teeth coming out of the ground, and fossilized jawbones and a partial skull roof were found.

A paper published Monday by the Zoological Journal of the Linnean Society says the new species was alive roughly 65 million years ago. Researchers believe the rodent-like animal weighed as much as 45 pounds.

Raymond says her discovery was “beginner’s luck.”