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The genus was erected by David Starr Jordan in 1907, in honor of the late University of Wyoming professor Wilbur Clinton Knight, "an indefatigable student of the paleontology of the Rocky Mountains." [1] It is the official state fossil of Wyoming, [2] and the most commonly excavated fossil fish in the world. [3]
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 of the Cambrian-Ordovician trilobite Saukiella †Saukiella †Sawdonia; Solemya †Solenochilus †Spiriferina †Spyroceras †Stearoceras †Streptognathodus †Strophomena †Syspacheilus †Tainoceras †Tetrataxis; Fossil of the Cambrian trilobite Tricrepicephalus †Tricrepicephalus †Uncaspis †Uranolophus †Westonoceras ...
Ferdinand Vandeveer Hayden (geologist-in-charge of the United States Geological and Geographical Survey of the Territories, the forerunner of the United States Geological Survey) first used the name "Green River Shales" for the fossil sites in 1869. [7] Millions of fish fossils have been collected from the area, commercial collectors operating ...
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).
Wyoming first became a hotspot for dinosaur research in the 1870s with the discovery of the dinosaurs preserved in the Morrison Formation. By the early 20th century, hundreds of tons of dinosaur fossils had been excavated from Wyoming. The Eocene fish Knightia is the Wyoming state fossil. Triceratops is the state dinosaur of Wyoming.
Fossil fish from the Beartooth Butte Formation. Type: ... The Beartooth Butte Formation is a geologic formation in Wyoming. It preserves fossils dating back to the ...
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.