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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. The sediments are deposited in very fine layers, a dark layer during the growing season and a light-hue inorganic layer in the dry season.
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).
Atractosteus atrox (from atrox, Latin for 'savage'), the Green River atrox gar, [1] is an extinct species of gar from the Early Eocene of western North America. It is known from many well-preserved specimens found in the famous Fossil Butte deposits of the Green River Formation in Wyoming, US, in addition to a possible vertebra from the Bridger Formation.
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.
Fossil collecting – Collecting fossils to study, collect or sell; Fossil park; Jurassic Coast – World Heritage Site on the coast of southern England; Lagerstätte – Sedimentary deposit with well-preserved extraordinary fossils; Lists of dinosaur-bearing stratigraphic units; List of fossil parks around the world; List of fossil parks in India
1]: Length: 730 mi (1,170 km): Basin size: 48,100 sq mi (125,000 km 2): Discharge: : • location: Green River, Utah [2]: • average: 6,121 cu ft/s (173.3 m 3 /s) [2]: • minimum: 380 cu ft/s (11 m 3 /s): • maximum: 68,100 cu ft/s (1,930 m 3 /s): Basin features; Tributaries: : • left: Blacks Fork, Henrys Fork, Duchesne River, Price River, San Rafael River: • right: New Fork River, Big ...
At first, fossil-hunting diver Alex Lundberg thought the lengthy object on the sea floor off Florida's Gulf Coast was a piece of wood. It turned out to be something far rarer, Lundberg said: a ...
Priscacara, is a genus of extinct temperate bass [1] described from Early to Middle Eocene fossils. It is characterized by a sunfish-like body and its stout dorsal and anal spines. The genus is best known from the Green River Formation of Wyoming, Utah and Colorado. Mass deaths of Priscacara suggest it formed schools.