Fossil Evidence for Evolution. A fossil is a physical remain of an ancient organism. The study of fossils is called paleontology. What is a fossil?. Fossils of a fish and a wasp. The organism dies and is covered by mud, dirt or rock.
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
The study of fossils is called paleontology.What is a fossil?
Fossils of a fish and a wasp.
The body starts to decay, caused by bacteria metabolizing the organic material.
If few bacteria are present, mineral replacement occurs and eventually the organism becomes rock.
Many times there are too many bacteria and the organism decays before fossilization can occur.
Because of this, the fossil record is far from complete.How are fossils made?
Soft tissue fossils can also happen in ice or amber, where the actual organism was preserved
For example, insects in amber or wooly mammoth in Arctic iceSoft Tissue Fossils
Extinctions have been happening at a much faster rate
This is due to the increase in human population-hunters, decrease of habitat
ie; passenger pigeonExtinction
A passenger pigeon.
These are very helpful for scientists to study body structures of ancient organisms and relate them to modern species.
Fossils also are evidence of the rate of evolutionary change.
Fossils in intermediate stages between species and their ancestors give clear evidence of evolution.How do fossils provide evidence for Evolution?
Fossils of feathered dinosaurs found in China reveal some evolutionary stages between dinosaurs and birds.