�y��vlog

A glyptodont skull at the AMNH, on the other side of the wall from the injured Smilodon, shows two oval holes in the top that could have been made by a saber-toothed cat.

Since humanity left Africa some tens of thousands of years ago, large land animals across the world have had a mysterious habit of dying out: giant kangaroo, woolly mammoth, glyptodont, to name a few.

They determined the glyptodont lineage originated about 35 million years ago.

One of the main differences between this ancient group and their modern cousins is the glyptodont's huge, dome-shaped shell, which was not articulated like the iconic, layered bands of the armadillo.

Sure enough, the team eventually managed to reconstruct the entire mitochondrial genome - because the computer simulations and bait sequences were mitochondrial DNA - of a glyptodont.