When the dinosaurs died, lichens thrived

When an asteroid smacked into the Earth 66 million years ago, it triggered mass extinctions all over the planet. The most famous victims were the dinosaurs, but early birds, insects, and other life forms took a hit too. The collision caused clouds of ash to block the sun and cool the planet’s temperature, devastating plant life. But a new study in Scientific Reports shows that while land plants struggled, some kinds of lichens—organisms made of fungi and algae living together—seized the moment and evolved into new forms to take up plants’ role in the ecosystem.


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Source: Phys.org