Fossil - Wikipedia
网页A fossil (from Classical Latin fossilis, lit. '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.
Fossil - National Geographic Society
网页2024年8月26日 · Fossils are often found in rock formations, which although formed deep underground, have been moved to the surface (by . plate tectonics) and/or been eroded to the Earth’s surface by wind, ice, rain and water.
What Is a Fossil? Definition, Types, Examples - Science Notes and …
网页2024年2月28日 · What Is a Fossil? Definition. A fossil is the preserved remains, impression, or trace of any once-living organism from a past geological age. These include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood, oil, coal, and DNA remnants.
Fossil | Definition, Types, Examples, & Facts | Britannica
网页2024年8月29日 · Fossil, remnant, impression, or trace of an animal or plant of a past geologic age that has been preserved in Earth’s crust. The complex of data recorded in fossils worldwide—known as the fossil record—is the primary source of information about the history of life on Earth.
What Are Fossils and Where Are They Found the Most?
网页2023年12月21日 · Although there are three different types of rocks — igneous rock, metamorphic rock, and sedimentary rock — almost all fossils are found specifically in sedimentary rock, that's because, for fossilization to happen, sediments like organic material, sand, silt, and mud have to settle around the remaining bones.
Paleontology - National Geographic Society
网页2023年10月19日 · Fossils are the remains of plants, animals, fungi, bacteria, and single-celled living things that have been replaced by rock material or impressions of organisms preserved in rock. Paleontologists use fossil remains to understand different aspects of extinct and living organisms.
What is a fossil? - Natural History Museum
网页You can find fossils anywhere that has rocks of the right age and type. Fossils are usually found in sedimentary rock, which forms when sand, silt, mud or the calcium carbonate shells of sea creatures settle in layers that are then compacted.
11.3: Fossils - Geosciences LibreTexts
网页Fossils form in five ways: preservation of original remains, permineralization, molds and casts, replacement, and compression. Rock formations with exceptional fossils are called very important for scientists to study. They allow us to see information about organisms that we may not otherwise ever know.
Fossils - British Geological Survey
网页Fossils are typically found in sedimentary rocks and occasionally some fine-grained, low-grade metamorphic rocks. Sometimes the fossils have been removed, leaving moulds in the surrounding rock, or the moulds may have later been filled by other materials, forming casts of the original fossils.
Fossil record | Definition & Facts | Britannica
网页Fossil record, history of life as documented by fossils, the remains or imprints of organisms from earlier geological periods preserved in sedimentary rock. It is used to describe the evolution of groups of organisms and the environment in which they lived and to discover the age of the rock in which they are found.