The world's oldest amber, dating back to the Middle Devonian, 385 million years ago, has been discovered in China's far northwest, revolutionizing our understanding of plant evolution. This groundbreaking find challenges the notion of amber as a product of the dinosaur age, predating the rise of seed plants and major insect plant grazers. The amber fragments, found in a bed of coal, were so tiny they required ultraviolet light to detect, measuring between 0.1 and 1.5 millimeters. This discovery suggests that resin production, a key defense mechanism for plants, emerged much earlier than previously thought, possibly in response to threats like wildfires and parasitic fungi. The presence of these ancient resin particles in a wet, organic-rich environment indicates that early vascular plants were already developing sophisticated adaptations to survive and thrive in their terrestrial habitats. This finding not only highlights the complexity of prehistoric ecosystems but also underscores the importance of amber as a valuable resource for understanding the evolution of plants and their interactions with the environment. The study, published in Science Advances, opens up new avenues for exploration, suggesting that older ambers may have been unearthed and await further analysis to reveal their secrets.
