Leptictidium is going to dig up your old loved ones and kill them again while intoxicating your dogs. Straight outta the Eocene and into the trees! Leptictidium is: Jesse - Drums/Vocals Zakk - Guitars Sam - Bass/Vocals Leptictidium is a small mammal, similar to todays elephant shews, that became extinct around thirty five million years ago. they appeared in the Lower Eocene, a time of warm temperatures and high humidity, roughly fifty million years ago.