Third Cenozoic beast to draw in my style. This is a saber-toothed marsupial! However it lived way before the Doedicurus and Pyrenean ibex. (the other 2 Cenozoic beasts I draw)
^ It’s a sparassodont. Sparassodonta split off from the line leading to modern marsupials before the common ancestor of modern marsupials, so Thylacosmilus is related to but not considered a true marsupial.