
Mammal Bone Fossils

by Michael Long/science Photo Library
Title
Mammal Bone Fossils
Artist
Michael Long/science Photo Library
Medium
Photograph - Photograph
Description
Mammal bone fossils, illustration. These fossilised bones are in a type of rock known as marl. The process of fossilisation begins when an animal dies and the body ends up in a location such as sediments below water. The soft tissues decay, while minerals in the skeleton are gradually replaced by minerals from the mud. These minerals solidify into a form of stone or rock, preserving the shape and structure of the bones. The fossil may remain underground, or may eventually be exposed by erosion of the surrounding material. Marl is a carbonate-containing mudstone that consists of variable amounts of clays and silt.
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September 12th, 2018
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