Hamilton Quarry is a Late Carboniferouslagerstätte near Hamilton, Kansas, United States. It has a diverse assemblage of unusually well-preserved marine, euryhaline, freshwater, flying, and terrestrial fossils (invertebrates, vertebrates, and plants). This extraordinary mix of fossils suggests it was once an estuary. This type of Lagerstätte is considered a Konservat-Lagerstätte (or conservation lagerstätte), due to the quality the preservation of soft tissue (skin preservation).
The lagerstätte occurs within a paleovalley that was incised into the surrounding Carboniferous cyclothemic sequence during a time of low sea level and was then filled in during a subsequent transgression. The channel has a capping series of interbedded laminated limestones and mudstones for which are designated the Lagerstätte beds or ‘vertebrate horizon’. This facies contains a well-preserved mixed assemblage of terrestrial (conifers, insects, myriapods, reptiles), freshwater (ostracods), aquatic (amphibians, reptile), brackish or euryhaline (ostracods, eurypterids, microconchids, fish), and marine (brachiopods, echinoderms) fossils.
^Wehrbein, Randol (2017-05-12). Comparisons of Paleoenvironments, Taxa, and Taphonomy of the Late Carboniferous Garnett and Hamilton Quarry Localities, Eastern Kansas (Thesis thesis).
^Kjellesvig-Waering, E. N. (1986). "A restudy of the fossil Scorpionida of the world". Palaeontographica Americana. 55: 1–287.
^Cunningham, Christopher R. (1993). "Hamilton Fossil-Lagerstätte (Upper Pennsylvanian, Greenwood County, Kansas): Internal Stratigraphy and Addition to the Microfossil Assemblage". Transactions of the Kansas Academy of Science. 96 (1/2): 131–139. doi:10.2307/3628324. ISSN 0022-8443. JSTOR 3628324.
^Cunningham, Christopher R.; Feldman, Howard R.; Franseen, Evan K.; Gastaldo, Robert A.; Mapes, Gene; Maples, Christopher G.; Schultze, Hans-Peter (1993). "The Upper Carboniferous Hamilton Fossil-Lagerstätte in Kansas: a valley-fill, tidally influenced deposit". Lethaia. 26 (3): 225–236. doi:10.1111/j.1502-3931.1993.tb01524.x. ISSN 0024-1164.