Arthur Lakes
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Arthur Lakes was an American geologist, artist, writer, teacher and Episcopalian minister. He captured much of his geological and palaeontological field work in sketches and watercolours. Lakes is cre
Lakes's sketch of expedition members in Como Bluff
Sketch of bones in skeleton by Arthur Lakes, 1879
Morrison Formation
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The Morrison Formation is a distinctive sequence of Upper Jurassic sedimentary rock found in the western United States which has been the most fertile source of dinosaur fossils in North America. It i
Arthur Lakes
…to the State. Lakes was a part-time professor at what later became the Colorado School of Mines. Having sent a fossilized vertebra specimen from the Morrison Formation in the Kansas Territory to Othniel Charles Marsh in 1877, he was then employed by Marsh to seek other discoveries, in the so-called Bone Wars. He went…
The distinctive banding of the Morrison Formation, a group of rock layers that occur throughout Dinosaur National Monument and the source of fossils like those found at the Dinosaur Quarry
Stratotypes for members of the Morrison Formation
Type locality of the Salt Wash Member near White Wash, Grand County, Utah. The Morrison Formation is underlain by the brick-red Summerville Formation.
Brushy Basin Member showing the purple and red colors of paleosols (ancient soils). East side of the San Rafael Swell, Emery County, Utah.