Triassic-Jurassic Extinction: What is it?

The Triassic-Jurassic extinction event 200 million years ago caused the extinction of 50% of all species, including many marine and terrestrial animals. The cause is unknown, but hypotheses include volcanic eruptions and meteorite impacts. The event paved the way for dinosaur dominance, but if therapsids had thrived instead, mammals could have evolved much earlier. The […]

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