Exceptionally preserved Brazilian fossil reveals early snakes explored several habitats. Research published in Nature challenges this either-or explanation, indicating that early snakes occupied several environments and developed different sensory adaptations. Its skeleton ranks among the most completely preserved fossil snakes found anywhere. Early snakes explored multiple habitatsTo determine how Tametara lived, the researchers compared it with Dinilysia patagonica, another fossil snake discovered in Argentina. Together with evidence from marine sediments, the findings reveal several shifts between burrowing, terrestrial and marine lifestyles in early snake evolution.