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

Media and distance education, Media and Distance Education: The role of...

Media and Distance Education: The role of media in distance education needs a specific mention. It is impIied that teaching is done  from a dbtance. It is also understood that

Define the functions of the macrophages, Define the functions of the Macrop...

Define the functions of the Macrophages The macrophages: 1)  phagocytose microorganisms and inert particles 2)  secrete IL-1 (Interlukin I), TNF (tumor necrosis factor),

In what way is crop rotation good for soil management, In what way is crop ...

In what way is crop rotation good for soil management? Continuous cultivation of a single crop over the years on the same site causes accumulation of a particular group of micr

Air pollution, Air Pollution Air pollution  is one of the major probl...

Air Pollution Air pollution  is one of the major problems created by modern man.  It  is estimated that about 100 million tons of waste are poured  into our atmosphere each y

Describe snop coding system, Question 1 Explain the purpose and uses of...

Question 1 Explain the purpose and uses of nomenclature and classification of diseases 2 With a help of an example explain the steps in coding 3 Discuss the medical recor

Hypothesis, Hypothesis: The next step is to formulate hypothesis. A  hy...

Hypothesis: The next step is to formulate hypothesis. A  hypothesis is a statement, put forward on the basis of reasoning, about the things that are being studied. It is an att

Six kingdom coloring worksheet, What protist changes shape constantly and f...

What protist changes shape constantly and flows around it''s food to engulf it

Digetive, i need an assinment how do i find one

i need an assinment how do i find one

Insight into robotics and robots, Insight into Robotics and Robots: The...

Insight into Robotics and Robots: The science of designing, building und using robots is called robotics. And what is a robot?  Many people  think of robots as mechanical pe

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