An article published in the journal “Scientific Reports” reports the identification of a new species of cynodont that lived about 220 million years ago, in the Triassic period, in today’s Argentina. A team of researchers named it Tessellatia bonapartei after examining a partial skull using an unusual neutron tomography technique after a classic X-ray tomography gave limited results due to the high presence of iron in the rock. The researchers’ effort paid off because some characteristics suggest a rather close relationship with mammals, which are likely descended from a single group of cynodonts.