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Fossil Butte National Monument Geologic Resources Inventory Report U.S. National Park Service

Fossil Butte National Monument Geologic Resources Inventory Report

U.S. National Park Service

Published August 3rd 2013
ISBN : 9781491253403
Paperback
72 pages
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 About the Book 

Approximately 50 million years ago, at the beginning of the Eocene Epoch, frigatebirds swooped above the waves of Fossil Lake, a vast, expansive lake that once occupied todays semi-arid, sagebrush and greasewood region of Wyomings Fossil Basin. AtMoreApproximately 50 million years ago, at the beginning of the Eocene Epoch, frigatebirds swooped above the waves of Fossil Lake, a vast, expansive lake that once occupied todays semi-arid, sagebrush and greasewood region of Wyomings Fossil Basin. At least 15 genera of fish swam in the lake, including paddlefish, stingrays, gar, pike, trout-perch and the abundant herring Knightia, Wyomings state fossil.