Palaeontological evidence, Science

Palaeontological Evidence:

Palaeontology  is a branch of  earth sciences, which is essentially a study of plant and animal life in the past geological periods, millions of years ago. It deals with  the successive plants and animals which have inhabited the earth since the earliest times, Evidence of  their existence is left in the form of  skeletons and bones buried in the rocks. These are known as fossils. Crucial evidence of  human evolution is provided by the study of  these fossils. 

Sometimes,  the buried body and the skeleton of  an animal disintegrate  entirely. If the surrounding material is sufficiently firm, a cavity may remain, having the exact outlines of the structures that disappeared. Such a cavity is called mold, Similar to molds are the impressions. These are left by extinct objects or parts of  the body upon the surrounding  material. The impression is made while the surrounding material is soft, like footprints in clay or lava.  Footprints of extinct animals are also impressions affording  valuable information about the animals that made them. 

It  is important to mention here, that early human fossils that have been found are generally fragmentary and incomplete. This is because only during the last 50,000 years or so, man started burying his dead. These later fossils are better preserved and, therefore, give us more information. For the earlier period, parts of bones are often the basis of imagining the re-construction of  the whole skeleton. The finding of fossils deposits  is both a matter of chance and of  deliberate excavation in certain regions of the earth.  

Posted Date: 9/28/2012 3:41:02 AM | Location : United States







Related Discussions:- Palaeontological evidence, Assignment Help, Ask Question on Palaeontological evidence, Get Answer, Expert's Help, Palaeontological evidence Discussions

Write discussion on Palaeontological evidence
Your posts are moderated
Related Questions
life style modification in management of diabetes?

First Hominids The First Human Fossil The earliest human like or hominid remains come from two separate East African sites. Ethiopia has yielded several hundred fossil fragment

1. A patient with Chronic Kidney Disease (Stage IV), who makes very little urine, presents to the hospital with severe nutritional deficiencies.  You are starting her

Data analysis: The interview data was interpreted using a Heideggerian hermeneutic phenomenological approach. The researchers became intimately  immersed with the data duri

On the day of the summer solstice in the Southern Hemisphere, the sun can be seen overhead at what location around the globe? At Tropic Of Capricorn

Microbes: You should know  that invisible microbes are present everywhere, because  they can surviveeven under very inhospitable conditions. They are all around us, in the air


Steroids are of many types . These are given below: a)  Sterols :  Cholesterol, ergosterol. b)  Bile acids :  Glycocholic acid, taurocholic acid. c)  Hormones  :  Testoste

What is the difference among a semi-precious and a precious stone? The difference among precious and semi-precious comes down purely to human definitions that have been compuls

structure and function of respiratory organs in arthropoda with diagram