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Lagerstätten ( German, singular: Lagerstätte) are sedimentary deposits that exhibit extraordinary fossil richness and completeness. The German word literally translates as "resting places." Palaeontologists distinguish two kinds: Konzentrat-Lagerstätten signifies deposits with a particular concentration of disarticulated organic hard parts, such as a bone bed, and Konservat-Lagerstätten signifies deposits known for the exceptional preservation of fossilized organisms, where the soft parts are preserved in the form of impressions or casts. The individual taphonomy of the fossils varies with the sites. Sometimes anoxic conditions, as in oxygen-free mud, have suppressed common bacterial decomposition long enough for the initial casts of soft body parts to register. External link
University of Bristol's Department of Earth Sciences.
Some of the world's major Lagerstätten include:
- Ediacara Hills; 700 mya; South Australia
- Doushantuo Formation; between 600 and 555 mya: Guizhou Province, China
- Chenjiang fauna in the Maotianshan shales; 518 mya: Yunnan Province, China
- Sirius Passet ; 518 mya; Greenland
- Burgess Shale; 505 mya ; British Columbia, Canada
- ' Orsten '; 500 mya; Sweden
- Rhynie Chert ; 400 mya; ScotlandScotland or in Scottish Gaelic, Alba is a country and former independent kingdom of northwest Europe, and one of the four nations comprising the United Kingdom. Scotland occupies the northern third of the island of Great Britain. Scotland took part in a p
- Hunsrück Slates ; 390 mya; Germany
- Mazon Creek ; 300 mya; IllinoisIllinois is a state in the United States named after the Illiniwek Indian tribe, which used to live there. The capital of Illinois is Springfield and the U. postal abbreviation for the state is IL . Illinois is pronounced ill-len-NOY, or jokingly, ill-len, US
- Karatau ; 213 - 144 mya; Kazakhstan
- Holzmaden ; 190 mya; Württemberg, Germany
- La Voulte-sur-Rhone ' 160 mya; FranceThe French Republic or France ( French: Republique francaise or France is a country whose metropolitan territory is located in western Europe, and which is further made up of a collection of overseas islands and territories located in other continents.
- Solnhofen limestoneThe Jurassic lagerstatte known as the Solnhofen limestone preserves a rare assemblage of fossilized organisms, some of which, such as sea jellies, don't ordinarily fossilize at all. Others, like the early bird Archaeopteryx are preserved in such detail th; 145 mya; Bavaria, Germany
- Chaomidianzi formation ; ca 135 mya; Liaoning, China
- Crato FormationThe Crato Formation in northeast Brazil, is a lagerstatte, or fossil accumulation, where rich deposits of fossils were laid down during the Aptian phase of early Cretaceous times, ca 117 Ma. At that time, the South Atlantic was opening up in a long narrow; Early Cretaceous (Aptian), ca 117 mya; northeast BrazilThis article is about Brazil, the country. For other article subjects named Brazil see Brazil (disambiguation). The Federative Republic of Brazil Republica Federativa do Brasil in Portuguese) is the largest and most populous country in South America.
- Santana formation ; 108 - 92 mya; Brazil
- Green River FormationThe Green River Formation is an Eocene Lagerstatte, a rare place where conditions were right for a rich accumulation of fossils. The sedimentary layers were formed in a large area of interconnecting lakes, named for Green River, a tributary of the Colorad; 50 mya; Colorado/Utah/Wyoming
- Monte BolcaMonte Bolca is a lagerstatt near Verona, Italy that was one of the first fossil sites with high quality preservation known to Europeans, and is still an important source of fossils from the Eocene. Strictly speaking, the Monte Bolca site is one specific s; 49 mya; Italy
- Messel Oil Shale; 49 mya; Hessen, Germany
- Dominican amber ; 10 - 30 mya; Dominican Republic
- Ashfall Fossil Beds ; 10 mya; Nebraska, United States
- Rancho La Brea Tar Pits; 20,000 yrs bp; California, United States
Paleontology
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