A drought in Texas dried up a river flowing through Dinosaur Valley State Park, exposing tracks from giant reptiles that lived some 113 million years ago, an official said Tuesday.
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Stephanie Salinas Garcia of the Texas Parks and Wildlife Department said dry weather made the tracks visible.
Most of the recently revealed tracks were made by Acrocanthosaurus, which weighed nearly seven tons (6,350 kilograms) as an adult and stood 15 feet (4.5 meters) tall