The left side of the image depicts a prehistoric ice age scene, dominated by a large brown ground sloth being confronted by two saber-toothed tigers. In the background, a woolly mammoth strolls across a marshy landscape near a smoking volcano. The right side shifts to a lush, tropical prehistoric era, featuring a large, red-and-white patterned Stegosaurus in the foreground, while a blue theropod dinosaur stands nearby. A smaller triceratops-like creature walks in the distance, and flying reptiles soar through a golden-hued sky.
The composition is split into two distinct ecosystems, each framed by lush, detailed vegetation. On the left, the cool-toned environment features icy waters and scattered birch trees under a smoky, overcast sky. On the right, the composition uses a warmer, vibrant palette with rich greens of jungle foliage and the earthy browns and reds of the dinosaur's skin. The lighting on the right side suggests a sunset or sunrise, casting a soft, golden glow across the rock formations and the volcanic backdrop.
The style is highly illustrative and naturalistic, reminiscent of classic museum murals or educational textbook diagrams. There is a sense of dynamic movement in the saber-toothed cats as they claw at the sloth, contrasted with the more static, towering presence of the Stegosaurus on the right. The attention to biological textures, such as the fur of the mammals and the armored plating of the dinosaur, creates a tactile, immersive sense of deep time.