Fossils may be either Plant or Animal in "origin".
Because they are remains of organisms preserved in rocks
Limestone
all of them
Sedimentary rocks formed from the remains of plants and animals are called organic sedimentary rocks. Examples include coal, formed from the remains of plants, and limestone, formed from the shells of marine organisms.
Fossils. Fossils are the preserved remains or traces of organisms found in rocks or other geological formations. They provide valuable information about past life forms and environments.
Well, isn't that just fascinating? Sedimentary rocks formed from the remains of dead organisms are called biogenic sedimentary rocks. Some common examples include limestone, formed from the accumulation of marine animal shells, and coal, which comes from the remains of ancient plants. Nature has a beautiful way of preserving life in the rocks around us.
Sedimentary rocks that are formed partially by animals and plants are called organic sedimentary rocks. These rocks are formed from the accumulation and lithification of the remains or traces of once-living organisms. An example of an organic sedimentary rock is limestone, which is formed from the accumulation of marine organisms' shells and skeletons.
A rock made from animal remains is called a fossiliferous rock. These rocks contain fossils, which are the preserved remains or traces of ancient organisms. Common examples include limestone and shale, where the remains of marine animals or plants are often found. Fossiliferous rocks provide valuable insights into the history of life on Earth.
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The remains of living organisms
fossils
The remains are called fossils.