Some 445 million years ago, life on Earth was forever changed. During the geological blink of an eye, glaciers formed over ...
During these waves of mass extinction, most vertebrate survivors were confined to refugia, or isolated biodiversity hotspots ...
About 445 million years ago, Earth nearly wiped out life in the oceans. Glaciers spread across the supercontinent Gondwana, ...
Paleontologists have uncovered the oldest known dinosaur footprints from Chile and the western margin of the ancient ...
A new construction of Gondwana provides a better match between Australia, Antarctica and India. The colored polygons are geologic units that formed before the continents broke apart. Scientists are a ...
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