U.S. Investment Immigration focuses on Life in the U.S.: According to a report by the U.S. "World News Network" on September 26, a research team from the University of Alaska discovered thousands of dinosaur footprint fossils along the rocky shore of the Yukon River in Alaska this summer. Experts point out that such a large-scale discovery is quite rare worldwide.
It was reported that researchers from the University of Alaska's Museum of the North brought back approximately 2,000 pounds (about 900 kilograms) of dinosaur footprint fossils of various sizes during a 500-mile expedition along the Tanana River and Yukon River in July.
Participating researcher Paul McCarthy stated: "I have seen dinosaur footprints in southwestern Alaska, the North Slope, and Denali National Park located inland, but few places show such a large quantity." He mentioned in a statement: "Due to the abundance of dinosaur footprint fossils along the Yukon River, we even discovered and collected as many as 50 samples in just 10 minutes."
Reports indicate that in the past decade, dinosaur footprints dating back approximately 65 million to 80 million years ago from the late Cretaceous period were also discovered in Denali National Park. The footprints discovered this time are estimated to date back 25 million to 30 million years. McCarthy added: "The first discovery of dinosaur footprints in Denali National Park in 2005 was after many years of searching, but since then, hundreds of dinosaur and bird footprint fossils have been successively found."
Pat Druckenmiller, curator of the Earth Science Museum at the Museum of the North, noted that such a large-scale discovery would only have been possible 100 years ago in mainland America. The formation of dinosaur footprint fossils is a result of the footprints made by dinosaurs being naturally cast after being filled with sand.