80-million-year-old snake brain reveals a surprising evolutionary secret

An exceptionally preserved snake fossil from Brazil reveals that early snakes were far more diverse than scientists once thought. Detailed brain reconstructions show that Tametara mirim was adapted for burrowing, while another ancient snake was suited to life above ground. Other fossils point to marine lifestyles as well.

By 80 million years ago, snakes were already experimenting with very different habitats and sensory systems.