This site shows some of their mistakes, and gives biographies of a few of the people who have gotten us where we are today.
In paleontology these are used to identify the reptiles and animals that are found in rocks without actually cracking the rocks.
Fossils, as well as minerals and rocks, may be dated by helium dating.
The relatively large amount of helium produced in rocks may make it possible to extend helium dating to rocks and minerals as young as a few tens of thousands of years old.
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In the future, helium dating may be found very useful for dating rocks of the late Cenozoic and Pleistocene, because rocks and minerals of this age have not been subject to the complex history of older rocks and minerals; thus, all the helium is more likely to have been retained.
This technique which preserves the fossils in their original configuration could help paleontologists identify other hard to access fossils.
Until the 1820s, hardly anyone even suspected that dinosaurs had ever existed.
In the years since, paleontology has sought to discover the entire history of life on earth, from the era of single-celled organisms up into the human era.
Note how many of the animal groups have fossil records that date back to the Cambrian period, over 500 million years ago.
Curious about how scientists learned to reconstruct fossil skeletons?
The knowledge was slow in coming, and scientists and scholars had some weird ideas.
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Since the time of separation of the evolutionary lines of apes and humans about 5 million years ago, some fossil specimens of the skeletal remains of our earliest ancestors have been preserved and discovered.