Fossils By:Giselle
As their name implies, movement trace fossils tell us about how ancient animals moved within their habitats. It is easy to grasp why such fossils are so useful for understanding ancient life.
Better understanding of body fossils Consider the footprints you might leave behind as you walk on a sandy beach or through the snow. While they don’t reveal much about your appearance (besides the general size and shape of the bottom of your foot or shoe), they reveal the direction you were moving, whether you were traveling alone or in a group, and also provide clues about whether you were walking (footprints close together) or running (footprints further apart).
● A fossil can preserve an entire organism or just part of one. Bones, shells, feathers, and leaves can all become fossils. ● Preserved remains become fossils if they reach an age of about 10,000 years. Fossils can come from the Archaean Eon (which began almost 4 billion years ago) all the way up to the Holocene Epoch (which continues today). ● Fossils also provide the geologist a quick and easy way of assigning a relative age to the strata
The hard parts of organisms that become buried in sediment may be subject to a variety of other changes during their conversion to solid rock. However. Solutions may fill the interstices, or pores, of the shell or bone with calcium carbonate or other mineral salts and thus fossilize the remains, in a process known as permineralization.
Eras are the largest unit of time. Ex: Precambrian Paleozoic Mesozoic Cenozoic
Petrified fossil Forms when minerals soak into the buried remains,replacing the remains and changing them into rock (MIneralization)
Preserved fossil Forms when entire organism or parts of organisms are prevented from decaying by being trapped in rock,ice, or amber
Types of fossils Examples of fossil include shells, bones, stone imprints of animals or microbes, exoskeletons, objects preserved in amber, petrified wood, coal, hair, oil, and DNA remnants.
summary There many different types of fossils that were from a long time ago .We can learn from there preserved fossils or remains even when what year was it!!
Resource https://www.britannica.com/science/fo ssil and notes