Fossils

By:Usman Viqar

What Fossils Are

Fossils are the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.

What Type of rocks are Fossils found in?

Fossils are most commonly found in sedimentary rocks, but all sedimentary rocks are not necessarily fossiliferous. It took me a long time to figure out why some scrumptious-looking outcrops of limestones, shales or sandstones that should have had fossils, are barren should have fossils.

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Fossils

Fossils are formed in a number of different ways, but most are formed when a plant or animal dies in a watery environment and is buried in mud and silt. Soft tissues quickly decompose leaving the hard bones or shells behind. Over time sediment builds over the top and hardens into rock.
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