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Fossilization

Horizontales
formed when the organism decays in the sediment and is washed away—an impression is left behind in the exact shape of the organism
the hard remains are rapidly covered with silt and sand, and over time more layers continue to build
the remains of plants and animals that lived in prehistoric time
pressure from the covering layers of dirt/rock cause the hard organic material to be replaced by minerals
The BEST observation of ancient plants and animals is provided by this proof to scientists
Can be footprints, feathers, nests, and burrows
change in the characteristics of organisms or populations over many generations
Verticales
a natural process that can include shells, bones, stone imprints of animals or microbes, exoskeletons, objects preserved in amber, petrified wood, coal, hair, oil, and DNA remnants
Who studies paleontology?
Pre-existing rocks or fragments of extinct animals serve as the basis for sedimentary rocks. They develop from deposits that build up on the surface of the Earth. Sedimentary rocks frequently exhibit recognizable bedding or layering.
a modification of an organism or its parts that makes it more fit for existence
Movement of earth plates may displace the fossil and return it to the surface for discovery
starts out as an empty space in the rock, a mold, that is filled with sediments and minerals.