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' obtained by digging ') [1] is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants. The totality of fossils is known as the fossil record. Though the ...
Fossil of a pterosaur (Ctenochasma) from the Solnhofen Limestone, Germany (American Museum of Natural History, New York, US). A paleontological or fossiliferous site is a locality in which a significant quantity of fossils is naturally preserved in the rocks. The extent of the site is determined, in some cases, by the spatial distribution of ...
Well-preserved basal arthropod Opabinia from Burgess Shale Lagerstätte (Middle Cambrian) . A Fossil-Lagerstätte (German: [ˈlaːɡɐˌʃtɛtə], from Lager 'storage, lair' Stätte 'place'; plural Lagerstätten) is a sedimentary deposit that exhibits extraordinary fossils with exceptional preservation—sometimes including preserved soft tissues.
Fossils of organisms' bodies are usually the most informative type of evidence. The most common types are wood, bones, and shells. [57] Fossilisation is a rare event, and most fossils are destroyed by erosion or metamorphism before they can be observed. Hence the fossil record is very incomplete, increasingly so further back in time.
Scientists in Argentina have discovered excellently preserved fossil remains of the oldest-known tadpole, the larval stage of a large frog species that lived alongside dinosaurs about 161 million ...
Fossil wood, also known as fossilized tree, is wood that is preserved in the fossil record. Over time the wood will usually be the part of a plant that is best preserved (and most easily found). Fossil wood may or may not be petrified, in which case it is known as petrified wood or petrified tree.
Scientists have discovered a pristine fossil of a mummified saber-toothed kitten that had been frozen in the Russian tundra for about 37,000 years. The carcass of a large cub estimated to be about ...
We know what fossils look like. For example, typical dinosaur fossils are bones turned to stone and preserved from the passage of time located, if we’re particularly lucky, in large collections ...