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Hamilton Quarry

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Hamilton Quarry is a Late Carboniferous lagerstätte 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).[1] The habitat of some of these faunal elements, as for anamniotic stegocephalians, is debated; although some of these have traditionally been interpreted as freshwater inhabitants,[2] some may have been euryhaline.[3][4] This extraordinary mix of fossils suggests it was once an estuary.[5] This type of Lagerstätte is considered a Konservat-Lagerstätte (or conservation lagerstätte), due to the quality the preservation of soft tissue (skin preservation).

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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.

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Paleobiota

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According to thesis[6]

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Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Vertebrates

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Arthropods

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Mollusks

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Other animals

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Lycophytes and ferns

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Seed ferns

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Gymnosperms

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Spores and Pollen

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Fuslinids

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References

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