There, the crew prospected the Hell Creek Formation, a world-famous deposit dating back to the very late Cretaceous Period - one that's known for fossils of Tyrannosaurus rex.

在那里，工作人员对地狱溪组进行了勘探，这是一个世界著名的矿床， 可追溯到白垩纪晚期——以霸王龙化石而闻名。

In rock formations in modern-day New Mexico and Texas, they found phosphorus in deposits dating to the late Ordovician Period, when the American Southwest was underwater, and just as plants were getting a foothold on land.

在现代新墨西哥州和得克萨斯州的岩层中，他们在奥陶纪晚期的沉积物中发现了磷，当时美国西南部处于水下，植物刚刚在陆地上立足。