Palaeontological evidence, Science

Assignment Help:

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.  


Related Discussions:- Palaeontological evidence

Disposal of chemical wastes, Disposal of Chemical Wastes : We shall deal w...

Disposal of Chemical Wastes : We shall deal with some commonly occurring chemical wastes. If you need to know more details covering the disposal of a wide range of chemicals, you

Distributed artificial intelligence models or individualbase, (a) What are ...

(a) What are Agent-based models?  What are turtles and patches? How are turtles programmed in netlogo? If you have a background in computer programming or if you are brave, play ar

How are fossils formed, How are fossils formed? Ans) Fossils are formed...

How are fossils formed? Ans) Fossils are formed amongst periods of rock formation, and caused by the gradual accumulation of sediment above millions of years at the bottom, mos

Spinal cord, Spinal Cord: The spinal  cord extends downwards from the  ...

Spinal Cord: The spinal  cord extends downwards from the  brain stem through the  protecting bony rings called vertebrae down the  centre of  the backbone, to the bottom of the

Absorption of proteins, Absorption of Proteins Proteolytic enzymes brea...

Absorption of Proteins Proteolytic enzymes break  the dietary  Proteins and proteins  into amino acids or di-  and  tripeptides.  In  fact,  it  is  in  this  form  that the di

#space, if the moon is 240000 miles from earth how far is that in scientifi...

if the moon is 240000 miles from earth how far is that in scientific notation.

Information & pics, how the metal tyre is fitted on the wheel of a bullock ...

how the metal tyre is fitted on the wheel of a bullock cart?

Energy transfer., true or false a conductor does not transfer energy well

true or false a conductor does not transfer energy well

Nutrient groups and their functions, Nutrient groups and their functions: ...

Nutrient groups and their functions: We should know that our body is made up of different chemical substances which are related to the food we take. Scientists have determine

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd