by Michael Miller,University of Cincinnati

https://phys.org/news/2023-04-geology-experts-evidence-dual-mass.html

Long before dinosaurs, Earth was dominated by animals that were in many ways even more incredible.

Carnivores such as Titanophoneus, or “titanic murderer,” stalked enormous armored reptiles the size of buffalo.

Many of these animals died out in amass extinctionduring the Capitanian Age approximately 260 million years ago.

Now an international team of researchers says evidence suggests this mass extinction was not a single event but two, separated by nearly 3 million years. Both were caused by the same culprit: massive volcanic eruptions.

By studying uranium isotope profiles of marine samples collected in the South China Sea, scientists identified two “pulses” in…