Conservation lagerstätte in Illinois on the National Register of Historic Places
"Mazon Creek" redirects here. For the river, see Mazon River.
Mazon Creek fossil beds
Stratigraphic range: ~309–307 Ma[1]
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United States historic place
Mazon Creek Fossil Beds
U.S. National Register of Historic Places
U.S. National Historic Landmark
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Nearest city
Benson Road, Morris, Illinois
NRHP reference No.
97001272
Significant dates
Added to NRHP
September 25, 1997[2]
Designated NHL
September 25, 1997[3]
The Mazon Creek fossil beds are a conservation lagerstätte found near Morris, in Grundy County, Illinois. The fossils are preserved in ironstone concretions, formed approximately 309 million years ago in the mid-Pennsylvanian epoch of the Carboniferous period. These concretions frequently preserve both hard and soft tissues of animal and plant materials, as well as many soft-bodied organisms that do not normally fossilize. The quality, quantity and diversity of fossils in the area, known since the mid-nineteenth century, make the Mazon Creek lagerstätte important to paleontologists attempting to reconstruct the paleoecology of the sites.[4] The locality was declared a National Historic Landmark in 1997.[3][5]
^McCoy VE, Asael D, Planavsky N. Benthic iron cycling in a high-oxygen environment: Implications for interpreting the Archean sedimentary iron isotope record. Geobiology. 2017;15:619–627. https://doi.org/10.1111/gbi.12247
^"National Register Information System". National Register of Historic Places. National Park Service. January 23, 2007.
^ ab"Mazon Creek Fossil Beds". National Historic Landmark summary listing. National Park Service. Archived from the original on January 3, 2008. Retrieved October 11, 2007.
^Illinois State Museum-Mazon Creek Fossil Exhibit
^Joanne Klussendorf (March 30, 1995), National Historic Landmark Nomination: Mazon Creek Fossil Beds(pdf), National Park Service. Accompanying photos, from 1912 and 1991. (497 KB)
and 28 Related for: Mazon Creek fossil beds information
The MazonCreekfossilbeds are a conservation lagerstätte found near Morris, in Grundy County, Illinois. The fossils are preserved in ironstone concretions...
(Mazoscolopendra and poorly known Palenarthrus), have been described from the MazonCreekfossilbeds, which are Carboniferous, 309–307 mya. More species appear in the...
epithet of "six-winged insects". The Holotype fossil of Mazothairos was found in the MazonCreekfossilbeds in modern-day Illinois, a lagerstätte formed...
exceptionally preserved fossil discovered in the late Carboniferous (Pennsylvanian) Francis Creek Shale (MazonCreekfossilbeds) of the Carbondale Formation...
morphological detail can be preserved. Nodules from the Carboniferous MazonCreekfossilbeds of Illinois, US, are among the best documented examples of such...
This list of fossil arthropods described in 2018 is a list of new taxa of trilobites, fossil insects, crustaceans, arachnids, and other fossil arthropods...
Shale – Fossil-bearing rock formation in the Canadian Rockies Marcellus Formation – Middle Devonian age unit of sedimentary rock MazonCreekfossilbeds – Conservation...
The genus contains a single species, P. zangerli, known from the MazonCreekfossilbeds located in present-day Illinois. It has a distinctive crown-like...
recumbirostran tetrapods from the middle Carboniferous of the MazonCreekfossilbeds, Illinois, United States. The type and only species, Nagini mazonense...
family Mayomyzontidae. It is known from the MazonCreekfossilbeds located in present-day Illinois. The fossil of M. pieckoensis is preserved as a carbon...
Protosolpugidae. This Carboniferous camel spider was discovered in the MazonCreekfossilbeds of Illinois. Paleontology portal Arthropods portal "†Protosolpuga...
modern hagfishes. Myxinikela is known from two specimens from the MazonCreekfossilbeds; such fossilized cyclostome specimens are rare due to their soft...
existed during the Carboniferous in what is now Illinois (found in MazonCreekfossilbeds). It was described by Samuel Hubbard Scudder in 1890, and the type...
species P. turnbullorum, named in 2003. Fossils of Pseudophlegethontia have been found from the MazonCreekfossilbeds in Grundy County, Illinois, a conservation...
Dunlop, J. A. (2024). "A remarkable spiny arachnid from the Pennsylvanian MazonCreek Lagerstätte, Illinois". Journal of Paleontology: 1–7. doi:10.1017/jpa...
existed during the Carboniferous in what is now Illinois (found in MazonCreekfossilbeds). With length up to 53 millimetres (2.1 in), this centipede had...
scyphozoan jellyfish known from the Late Carboniferous sediments of the MazonCreekfossilbeds. It contains a single species, O. pieckorum. It was first described...
hydrozoan affinity. Examples of Etacystis have been found only in the MazonCreekfossilbeds of the Midwestern United States. Etacystis communis takes its genus...
marginal marine beds of southern France by Trabelsi, Sames & Martín-Closas (2024). A study on the phylogenetic relationships of extant and fossil members of...
deciduous. In the famous MazonCreekFossilBeds of Illinois, these leaflets are one of the most commonly found plant fossils. The leaves have thick cuticles...
extinct genus of recumbirostran tetrapod from the Late Carboniferous MazonCreekfossilbeds of Illinois. It currently contains a single species, Joermungandr...
with the MazonCreekfossils of the Francis Creek Shale, which are also exposed in strip mines and quarries near the River. This fossilbed includes well-preserved...
worms are seldom found as fossils. The oldest known unambiguous example is Coprinoscolex ellogimus from the MazonCreekfossilbeds in Illinois, dating back...
existed during the Carboniferous in what is now Illinois (found in MazonCreekfossilbeds). This genus is known from single poorly preserved specimen, which...
America, fossils of lysorophians have been found from places such as the Cutler Formation in San Juan County, Utah and the MazonCreekfossilbeds in Grundy...
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