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The Green River Lake System contained three ancient lakes, Fossil Lake, Lake Gosiute, and Lake Uinta. These lakes covered parts of southwest Wyoming, northeast Utah and northwestern Colorado. Fossil Butte is a remnant of the deposits from Fossil Lake. Fossil Lake was 40 to 50 miles (64 to 80 km) long from north to south and 20 miles (32 km) wide.
The Green River Formation is a geological formation located in the Intermountain West of the United States, in the states of Colorado, Utah, and Wyoming.It comprises sediments deposited during the Early Eocene in a series of large freshwater lakes: Lake Gosiute, Lake Uinta, and Fossil Lake (the last containing Fossil Butte National Monument).
Fossil Lake is located in a remote area of northern Lake County, Oregon. It is 19 miles (31 km) from the unincorporated community of Christmas Valley by road. Fossil Lake is approximately 65 miles (105 km) southeast of Bend and 79 miles (127 km) north of Lakeview by straight-line distance. [1] [2]
Heliobatis radians (stingray), Green River Formation, Fossil Butte National Monument. The Green River Formation is an Eocene geologic formation that records the sedimentation in a group of intermountain lakes in three basins along the present-day Green River in Colorado, Wyoming, and Utah.
These include Fossil Lake, which is the source of Oregon's largest Pleistocene fossil assemblage. Included in this assemblage are typical Pleistocene megafauna , including Columbian mammoths , dire wolves , Ice Age bison , camels , the ground sloths Mylodon and Megatherium , and the short-faced bear Arctodus (which was previously mistaken for ...
Fossil Butte National Monument ... Dinosaur fossil, Riverine animals: fish, turtles, crocodilians, birds ... Lake Ngapakaldi to Lake Palankarinna Fossil Area ...
The Turtle Butte Formation is a geologic formation at Turtle Butte in South Dakota. [1] It preserves fossils dating back to the Paleogene period. See also
John Day Fossil Beds National Monument is a U.S. national monument in Wheeler and Grant counties in east-central Oregon.Located within the John Day River basin and managed by the National Park Service, the park is known for its well-preserved layers of fossil plants and mammals that lived in the region between the late Eocene, about 45 million years ago, and the late Miocene, about 5 million ...