【#美国一公园发现1.13亿年前的恐龙足迹# 】连日干旱导致美国得克萨斯州恐龙谷州立公园的河流干涸。当地时间8月23日，该公园在一份声明中说，公园河道内发现大约1.13亿年前的恐龙足迹。公园发言人斯蒂芬妮·萨利纳斯·加西亚表示，大多数在园内多处地点发现的足迹属于高棘龙，这种成年恐龙身高约4.57米，重量接近7吨。 These handout images obtained on August 23, courtesy of the Dinosaur Valley State Park in Texas, U.S., show dinosaur tracks from around 113 million years ago discovered in the park after severe drought conditions dried up a river. Most tracks belong to Acrocanthosaurus, according to park spokesperson Stephanie Salinas Garcia, who added that an adult Acrocanthosaurus was about 4.57 meters tall and weighed close to 7 tonnes.