👉 Tantalophis is a genus of extinct mammals from the Late Cretaceous period, which spanned approximately 27 million years ago. It was characterized by its large size and long limbs, with a unique skull shape that allowed for efficient hunting and mobility in search of food sources. The genus also contained several species known for their distinctive facial features, including a prominent jaw, a pronounced lower jaw, and the use of a single tooth in front of the eye.