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The Walcott–Rust quarry, in Herkimer County, New York, is an excellent example of an obrution (rapid burial or "smothered") Lagerstätte. Unique preservation of trilobite appendages resulted from early consolidation (cementation) of the surrounding rock, followed by spar filling of the interior cavity within the appendages .
Chile Bar Slate company quarry, off of highway CA193 next to the American River near Placerville, California; Limestone quarry near Auburn, California of the Mountain Quarries Company of San Francisco, a subsidiary of Pacific Portland Cement Company, near confluence of the North Fork and the Middle Fork of the American River.
Walcott-Rust Quarry. about 455? Ma New York, US This site is an excellent example of an obrution (rapid burial or "smothered") Lagerstätte. Unique preservation of trilobite appendages resulted from early cementation of the surrounding rock and spar filling of the interior cavity of the appendages. Isotelus gigas, a large asaphid trilobite
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Wake Stone Corp. and opponents have spent well over $1 million on the years-long legal battle over the proposed quarry on land owned by Raleigh-Durham International Airport.
Spectacularly preserved trilobite fossils, often showing soft body parts (legs, gills, antennae, etc.) have been found in British Columbia, Canada (the Cambrian Burgess Shale and similar localities); New York, U.S.A. (Ordovician Walcott–Rust quarry, near Russia, and Beecher's Trilobite Bed, near Rome); China (Lower Cambrian Maotianshan Shales ...
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A quarry is a type of open-pit mine in which dimension stone, rock, construction aggregate, riprap, sand, gravel, or slate is excavated from the ground. The operation of quarries is regulated in some jurisdictions to manage their safety risks and reduce their environmental impact.