capybara

Fossils, food webs, and a blood-clot surprise: six UW finds worth a second look

Ancient capybaras and palm trees in the desert?

3 min readUW News
Fossils, food webs, and a blood-clot surprise: six UW finds worth a second look
An illustration of a group of Cardiatherium, a genus of extinct, direct relatives of modern capybaras, hanging out in the late Miocene coastal wetlands and forestry canopy of the Atacama Region of northern Chile. Photo: Mauricio Alvarez
From UW News

Capybaras like their habitats wet. These large rodents thrive in low-elevation wetlands, migrating along creeks and rivers to nibble on foliage and flowers. That’s why researchers were surprised to find an 8.8 million-year-old fossilized capybara tooth in northern Chile’s Atacama Desert, one of the driest regions on Earth. In a paper published Sept. 5 in Scientific Reports, researchers postulate that the Atacama Desert must have had a wetter climate during the Miocene epoch, based on this discovery. This is the first time a capybara species has ever been seen in the Atacama region of Chile — today these creatures reside…

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Briefing

Source
UW News
Published
September 28, 2026