Paleontology
Green River is a lake system before it is a fish slab: a field report on Fossil Lake, stratification, and the Eocene archive
A field report arguing that the Green River Formation at Fossil Butte matters less as a source of famous split fish slabs than as the visible remnant of a small Eocene lake within a larger three-lake system: laminated Fossil Butte Member carbonates, the fossil-rich 18-inch layer, and a chemically stratified basin preserved fish, bats, rays, insects, plants, and mammals with unusual fidelity, while trace-fossil evidence keeps the site from collapsing into a cartoon of permanently dead bottom water.
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